Answer
See the picture.
Work Step by Step
Total: 521 adults.
The relative frequency for "Several times a week" is $\frac{103}{521}\approx0.1977$
The relative frequency for "Once or twice a week" is $\frac{204}{521}\approx0.3916$
The relative frequency for "A few times a month" is $\frac{130}{521}\approx0.2495$
The relative frequency for "Very rarely" is $\frac{79}{521}\approx0.1516$
The relative frequency for "Never" is $\frac{5}{521}\approx0.0096$
