All of the following plural nouns except

Question

a.flies
b.themselves.
c. ladys.
d.proofs
I am think d

All of the following compound nouns are correct except
a.editors in chief.
b.sons-in-law.
c.bird watchers.
d.mother-in-laws.
I am think b or d

Answer 1

Neither answer is correct.

Answer 2

for which one

Answer 3

All of your answers are wrong.

Answer 4

The first one is c

Answer 5

Yes. The first is c.