Based on a Recent Poll, There Is a 50-50 $1 / 2 \text { or } 0.5$

Multiple Choice

Based on a recent poll, there is a 50-50 chance that a randomly selected adult has pierced ears. Express the indicated degree of likelihood as a probability value between 0 and 1.

A) $1 / 2 \text { or } 0.5$
B) $1 / 50 \text { or } 0.02$
C) $1 / 4 \text { or } 0.25$
D) $3 / 4 \text { or } 0.75$