Critical Reasoning

The importance of the ozone layer to terrestrial animals is that it entirely filters out some of the wavelengths of light but lets others through. Holes in the ozone layer and the dangers associated with these holes are well documented. However, one danger that has not been given sufficient attention is that these holes could lead to severe eye damage for animals of many species.

Which one of the following is most strongly supported by the statements above, if they are true?

a) All wavelengths of sunlight that can cause eye damage are filtered out by the ozone layer where it is intact.
b) Few species of animals live on a part of the earth's surface that is not threatened by holes in the ozone layer.
c) Some species of the animals have eyes that will not suffer any damage when exposed to unfiltered sunlight.
d) A single wavelength of sunlight can cause severe damage to the eyes of most species of animals.
e) Some wavelengths of sunlight that cause eye damage are more likely to reach the earth's surface where there are holes in the ozone layer than where there are not.


This is a MUST BE TRUE question, where we are required to select an answer choice that can be proved from the stimulus.

The last line of the stimulus says "many species" but the answer choice D says "most species of animals"


Please explain the difference between these two.

Thanks in advance,
JOHN