Answer:
Option C, 13 births per 1000 people
Step-by-step explanation:
The number of children born in 2015 in USA is 3,978,497 which is approximately 4 million in number.
Considering the population of USA in 2015 which was 32.1 crore, the number of birth per 1000 person in the country is worked out to be 13 per 1000 people.
However, this mark has not yet increased after 2015. hence, it can be said that there are 13 babies taking birth in every 1000 people.
Hence, option C is correct.