What does the 'active construction" of grammar theory state?
a. children pick up a language by imitating their parents.
b. humans learn languages because of development.
c. children learn languages due to the reinforcement given by parents and adults.
d. all children are born with an innate ability to form grammatically correct sentences.

Active construction theory of grammar states that children learn a language by imitating their parents.

Thus the correct answer is Option A

Explanation:

There are various theories that have been presented about the language acquisition ability of human till now. Of these theories the active construction of grammar theory is accepted widely. This hypothesis states that children learn from their surrounding environment and what they hear from their parents.

They try to follow what they listen by making rules of that language by pattern finding. They then hypothesize those rules and test them in their own way until they don’t reach the level of the adults.