Answer:
The correct option is A) 32%.
Explanation:
Consider the provided graph.
First count the total numbers of dots on the number line:
3+4+1+2+5+1+4+2+1+2=25
Now we need to find the percentage of the people are 18 or younger.
The Number of people who are 18 or younger than:
3+4+1=8
Thus 8 out of 25 are 18 or younger than.
Now find the percentage as shown:



Hence, 32% are 18 or younger than.
Thus, the correct option is A) 32%.