Guppies from Trinidad Form Two Distinct Populations That Differ in Several

Guppies from Trinidad form two distinct populations that differ in several life history traits that appear to relate to the local predator populations,pike- cichlids or killifish.Which of the following experiments would test the heritability of these traits?

A) Provide additional food to the guppies from cichlid habitats to see if they will grow to the same size as guppies from the killifish habitat.
B) Introduce cichlids into a habitat with killifish.
C) Raise both populations without predators to see if they maintain their life history traits.
D) Raise both populations with cichlids to see if the population of smaller,faster- maturing guppies reproduces more quickly.