Manny is making almond muffins for a mid-day snack. He makes 36 muffins and uses 4 cups of almonds. What is the unit rate of muffins per cup of almonds that he is using?

A. 8 muffins
B. 1/9 of a muffin
C. 12 muffins
D. 9 muffins

To find the unit rate of muffins per cup of almonds, we divide the number of muffins by the number of cups of almonds: 36 muffins / 4 cups of almonds = <<36/4=9>>9 muffins. The unit rate is 9 muffins. Answer: \boxed{D}.

To find the unit rate of muffins per cup of almonds, we divide the number of muffins by the number of cups of almonds.

So, the unit rate of muffins per cup of almonds is:

36 muffins ÷ 4 cups = 9 muffins per cup

Therefore, the correct answer is D. 9 muffins.

To find the unit rate of muffins per cup of almonds, we need to divide the number of muffins by the number of cups of almonds used.

Manny made 36 muffins and used 4 cups of almonds.
So, the unit rate is 36 muffins / 4 cups of almonds.

To simplify the unit rate, we can divide both the numerator and the denominator by their greatest common divisor, which is 4.
Dividing 36 by 4, we get 9.
Dividing 4 by 4, we get 1.

Therefore, the simplified unit rate is 9 muffins / 1 cup of almonds.

Thus, the correct answer is D. 9 muffins.