The talk test is a simple way to measure relative intensity. In general, if you're doing moderate-intensity activity you can talk, but not sing, during the activity. If you're doing vigorous-intensity activity, you will not be able to say more than a few words without pausing for a breath.
The suffix ist means one who, that which.
The Best Answer Would Be D (Im Guessing) Because B&C Should Be Stored In A Freezer And A Is Cooked So You Could Leave It Out.