Which of the following are two main reasons for declining sex ratio in India ?

Dowry and Preference for a male child. Female children are born less by nature, and female children are unhealthy by birth. An increase in the number of female suicides and murders due to dowry. All of the above

Dowry and Preference for a male child.

Dowry and other such patriarchal practices make female children and burden for the family, which leads to female foeticide and female infanticide resulting in a declining sex ratio.