The correct options are
A Conservation of forests and ensuring the livelihood and food security of the forest dwellers.
B The forest rights on ancestral lands and their habitat were not adequately recognised during the colonial period as well as in independent India.
C It was necessary to address the long-standing insecurity of land rights and access rights of forest dwellers.
The act had to be passed because it also recognized that it was impossible to preserve the forests without restoring the rights of the tribes. The Act confers on forest dwellers and other traditional users of forests, their traditional rights over the forests and also title to lands they use.