To solve this question, the user needs to know the ratio concept. The given statement is a ratio between 16 hours and 1 day and 20 days and June's length.

We can represent this ratio as follows:

16 hours : 1 day :: 20 days : June's length

To find out whether this statement is true or false, we need to check whether the ratio is correct.

We know that one day has 24 hours. Therefore, 16 hours is equal to 16/24 = 2/3 of a day.

Let's assume June has x days. According to the ratio:

16/24 = 2/3 = 20/x

Solving for x, we get:

x = (20 * 24)/2 = 240

Therefore, June's length is 240 days.

The ratio can be rewritten as:

2/3 : 1 :: 20 : 240

Simplifying the ratio, we get:

2 : 3 :: 1 : 12

This ratio is true.

Therefore, the answer is:

The Answer is: A. True