Muscles make up more than __of a person's body mass.
A 10%
B 25%
C 40%
D. 75%

About 40%

Explanation:

You didn't specify who you wanted the “average muscle percentage” for. Here are some averages for various adults that are of a normal weight.

Women that don't exercise, have fairly sedentary lifestyles have an average of about 24% of their weight in muscle. With a moderately active lifestyle it can go up to around 30%. High amounts of muscle, such as a weight lifter, can be as high as 35% of weight. Anything over 35% is considered extremely high, typical of competitive bodybuilders.

light rays enter the eye through the cornea, the clear front first understand how the eye enables us to see, and what role the cornea plays in eye at different angles, and do not focus on one point the retina, but on many we can tolerate very large scars on our bodies with no concern except for our vanity.