Question

WILL MARK AS BRAINLIEST

S is a subset within a universal set, U.

If S = {x, y, 4, 9, ?), which could describe U?

A) U = {letters}

B) U = {numbers}

C) U = {punctuation marks}

D) U = {keys on a keyboard}

Answer 1

Answer:

D

Step-by-step explanation:

Key on keyboard is a universal set in which letter and words both present to define set S