Imagine that six-year-olds can complete a particular block design puzzle in five minutes. It takes Bailey almost eight minutes to complete the same task. In Binet's terms, Bailey's age is than six.

Chronological;

Lower

Explanation:

Since a six years old can conclude the puzzle in five minutes and Bailey took eight minutes to get it done, It can be assumed that his age is not up to six hence his inability to solve the puzzle quicker because according to Binet, a child will be able to solve a certain difficulty at a particular age.

acid rain is the answer

just search google

explanation:

google is the best