During which one of the following exercise intensity levels would you still be able to sing? a. light b. moderate c. vigorous d. excessive

During low exercise intensity levels you would still be able to sing. Correct A Low-intensity exercise is exercise that gets you to about 40 to 50 percent of your MHR. Examples include a casual walk, a stretch session, a beginners' yoga class or tai chi... Low-intensity exercises can easily become moderate-intensity exercises by upping your pace. However while performing  moderate activity you can talk, but you can't sing.

true. these things define the personality of the person.