In order for an organism to evolve or survive any length of time, it must learn to somehow deal with the issue of UV rays, which implies that the very oldest sorts of organisms that exist on Earth today all have mechanisms such as the production of sunscreen pigments like melanin, also known as tanning, to protect themselves.

A) which implies that the very oldest sorts of organisms that exist on Earth today all have mechanisms such as the production of sunscreen pigments like melanin, also known as tanning, to protect themselves.

B) which infers the fact that the very oldest sorts of organisms that exist on Earth today all have mechanisms such as the production of sunscreen pigments like melanin, also known as tanning, to protect themselves.

C) which is inferred from the fact that the very oldest sorts of organisms that exist on Earth today all have mechanisms such as the production of sunscreen pigments like melanin, also known as tanning, to protect themselves.

D) which can be interpreted from the fact that the very oldest sorts of organisms that exist on Earth today all have mechanisms such as the production of sunscreen pigments like melanin, also known as tanning, to protect themselves.

E) which can be implied from the fact that the very oldest sorts of organisms that exist on Earth today all have mechanisms such as the production of sunscreen pigments like melanin, also known as tanning, to protect themselves.
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When u r about to make ends meet, someone moves the ends.

the question here is imply vs infer.

I go with C here .
A little bit of CR skills help here. the first line' In order for an organism to evolve or survive any length of time, it must learn to somehow deal with the issue of UV rays' is the conclusion . and rest of the passage i simple fact.
The first sentence conclusion is based on the rest of the passage.
thus a conclusion drawn can only 'infer' from rest of the passage and not imply.