Which among the following states became the first state to observe Child Protection Day on March 3, 2014 ‘?

The correct answer is (a) Assam.

Assam became the first state in India to observe Child Protection Day on March 3, 2014. The day is observed to raise awareness about the rights of children and to promote their protection from abuse and neglect.

The other options are incorrect. Sikkim, Bihar, and Gujarat are all states in India, but they did not become the first state to observe Child Protection Day on March 3, 2014.