Miguel and Fred are assigned to do a science project together. Their interac
consist mostly of working together in class and saying hello to each other in
hallways at school. Miguel and Fred are best described as
A. not friends at all.
B. friends of the opposite sex.
C. close friends.
D. casual friends.

I think your answer would be D.

Explanation:

A: If they are not friends at all, they would most likely not work together during class or say hello to each other.

B: Miguel is usually a boys' name and same consists to the name Fred.

C: If they are close friends, it would also (probably) list that they would ''hang out'' together.

D: Most likely the answer.

(Hope this helps!)