group behavior check

Question

Which piece of evidence would best support the argument for kin selection as a mechanism for the evolution of altruistic behavior?(1 point)

1. a penguin protects its chick from seagulls
2. a clown fish helps clean parasites off of a sea anemone
3. a hippo stops a crocodile from eating an antelope
4. an antelope gets separated from the herd and killed by predators

Answer 1

See my answer to your other question on this topic.

In only one case is an individual taking an action that will make it likely that its own genes will be passed on to another generation.

We can eliminate #4 because there's no altruistic behavior being described. #'s 2 and 3 describe individuals helping individuals of other species meaning that they are only very distantly related.

In choice #1 a parent is risking its own life to protect the life of its offspring which contains 50% of its own DNA. This is the only reasonable answer here.