Rights of the child A/RES/72/245 and fundamental freedoms, such as the right to education, the right to freedom of expression, the freedom to seek, receive and impart information and the right to express their views freely, are used to their fullest; (k) To ensure the legal protection of children from sexual abuse and exploitation online and to define it legally, in accordance with international human rights law and obligations, to criminalize all relevant conduct related to the sexual exploitation of children online and offline and to ensure that all those in the whole chain of individuals involved in or attempting to commit suc h criminal activities are held accountable and brought to justice in order to fight impunity, taking into account the multi-jurisdictional and transnational nature of child sexual exploitation and abuse perpetrated online through information and communications technologies; (l) To protect children deprived of their liberty from torture and other cruel, inhuman or degrading treatment or punishment, to ensure that, if they are arrested, detained or imprisoned, children are provided with prompt access to lega l and other appropriate assistance, as well as the right to challenge the legality of the deprivation of their liberty before a court or other competent, independent and impartial authority, and to a prompt decision on any such action, that, from the momen t they are arrested, children will have the right to maintain contact with their family through correspondence and visits, save in exceptional circumstances, that no child is sentenced or subjected to forced labour or corporal punishment or deprived of acc ess to and the provision of health care and services, hygiene and environmental sanitation, nutritious food, education, basic instruction and vocational training, access to safe, confidential, independent mechanisms to report on violence and that the condi tions in such settings are regularly and effectively monitored, and to undertake prompt investigations of all reported acts of violence and ensure that perpetrators are held accountable; (m) To consider taking measures for the dissemination and implement ation of the United Nations Model Strategies and Practical Measures on the Elimination of Violence against Children in the Field of Crime Prevention and Criminal Justice, 43 and invites relevant United Nations actors to support Member States, where appropriate, to this end through concerted efforts; (n) To improve the situation of children living in poverty, in particular extreme poverty, deprived of adequate food and nutrition, water and sanitation facilities, with limited or no access to basic physical and mental health-care services, shelter, education, participation and protection, taking into account that, while a severe lack of goods and services hurts every human being, it is particularly threatening and harmful to children, leaving them unable to enj oy their rights, to reach their full potential and to participate as a full member of society, and exposed to conditions that lead to increased violence; (o) To ensure that the best interests of the child are a primary consideration in all decisions and actions concerning children, underlining that migrant children, including undocumented and unaccompanied children, regardless of migratory status, should be rapidly assigned a legal guardian when unaccompanied and be provided with effective protection from discrimination and from violence, as well as with access to due process in all legal and administrative proceedings affecting them, including for the determination of their age and legal status, and in this context reaffirms paragraphs 66 and 67 of its resolution 71/177; (p) To devise, enforce and strengthen effective gender- and age-sensitive measures to combat and eliminate all forms of trafficking in children, including for sexual exploitation and forced labour, as part of a comprehensive anti-trafficking __________________ 43 17-23328 Resolution 69/194, annex. 13/15