Question

choose the correct answer. this is one of the things that _.
options (a)kill (b)killed (c)is killing (d)kills​

Answer 1

Answer:

kills

since the question is talking about single thing the verb will be in plural

Answer 2

Answer: Kills

Explanation:

the object  'things', is in plural so the verb will be singular

for example : 'He EATS' and 'They EAT'