Question

Which words are "modal" helping verbs

A. make, made, may
B. won't, will, work
C. since, saw, seen
D. can, will, shall, may

Answer 1

In "A" "make" isn't a modal verb - you make something, a noun

B: "work" isn't a modal verb.

C: since isn't a verb at all!!

and D is the correct answer, see for example the following sentences where those verbs are used as modal verbs:

she can cook
she will cook
she shall cook
she may cook