Final answer:
The other name for a male mallard is a Drake. Gander, Tom, and Cob refer to male geese, turkeys, and swans respectively.
Step-by-step explanation:
The correct answer is A. Drake. A male mallard, which is a common type of duck, is referred to as a drake. The other terms refer to different types of male birds: 'B. Gander' refers to a male goose, 'C. Tom' is used for a male turkey, and 'D. Cob' refers to a male swan. Hence, when specifically talking about male mallards, the term drake is the appropriate choice.