Answer:
the result of inherited ability
Step-by-step explanation:
Inherited ability refers to the type of ability that can be passed by the parents to the children through genetics.
If the size of hippo campus is determine by genetic,children that are born from intelligent parents should be guaranteed to also have bigger hiccoughs. Since there is no correlation between the two, we can conclude that environmental factors play a crucial role in determining the size of hippocampus.