Unshielded Twisted Pair cabling is a:

A.
four-pair wire medium that is used in a variety of networks.

B.
three-pair wire medium that is used in a variety of networks.

C.
two-pair wire medium that is used in a variety of networks.

D.
one-pair wire medium that is used in a variety of networks.

Explanation:
Unshielded Twisted Pair cabling consists of an outer jacket and four pairs of twisted wire medium.
Incorrect Answers:
B: There are four pairs, not three.
C: There are four pairs, not two.
D: There are four pairs, not one.

https://en.wikipedia.org/wiki/Twisted_pair#Unshielded_twisted_pair_.28UTP.29