Which number should come next in the pattern? 37, 34, 31, 28

Which of the following can be arranged into a 5-letter English word?
a. H R G S T

b. R I L S A

c. T O O M T

d. W Q R G S

What number best completes the analogy:
8:4 as 10:

a. 3

b. 7

c.24

d.5​