C - prey
i - predator
a - parasitism
f - commensalism
d - competition
The relationship between Caroline and the narrator is second cousins.
<h3>What is a Kindred?</h3>
This refers to the relationship between a person and his immediate and extended family relations.
Hence, based on the fact that the narrator's first cousin, Amy has another cousin named Caroline who is the daughter of Amy's uncle, hence, it can be inferred that Caroline and the narrator are second cousins.
Read more about second cousins here:
brainly.com/question/13948943
B. Sails
The Egyptians were among the first to use sails on their ships to improve transportation.
While the Bill of Rights protect individual rights, elastic clause allows Congress to make laws that could lead to limits in order to protect the common good. Elastic clause is also known as Necessary and Proper clause which gives Congress powers to make all laws that are important and all the powers vested by the Constitution.
The answer would be letter A.