Answer
(a)
Work Step by Step
We can get the number of accidental injuries by summing the numbers of the first column: $295+655+239+363=1552$.
The percentage is the count divided by the sum, thus:
14-18 year olds: $\frac{655}{1552}\approx0.422=42.2\%$
23-30 year olds: $\frac{363}{1552}\approx0.234=23.4\%$. The percentage of 14-18 year olds is higher than the percentage of 23-30 year olds, thus the answer is (a).
