What is a berm? A cross profile of a beach

A notch found in a cliff

Ridges on the beach left as a mark of the tide

Flat strip of a land,raised bank ,or terrace bordering a river or canal

Explanation:

A path or grass strip beside a road

i believe it's c. the trait for large beaks will be passed on to future generations through natural selection.

since eventually smaller beaks would have to find another source of food or even eventually just die out from the lack of food.