Our argument is whether or not the turtles near the Baja peninsula and the turtles near Japan belong to the same group; the fact that there are other nesting sites is irrelevant to the argument.

This provides more information about conditions exclusively in the Atlantic Ocean, while our argument discusses Pacific turtles. This information does not impact our argument about the Pacific turtles.

This answer does not weaken the argument because it gives information about the number of hatchlings (aka individual turtles) near Japan, but the number of nesting sites near the Baja peninsula. Comparing these different data points is not useful and doesn’t weaken the argument.

This tells us that two sets of turtles that are definitely from different groups (Atlantic turtles and Pacific turtles) have a 95% DNA match. If turtles from different groups can have 95% DNA match, then the argument loses its support.

The argument is about turtles in the wild, and whether or not turtles found in two different areas belong to the same group. (E) does not provide any information that impacts this argument.