Not enough sleep is the reason ___ many people suffer ...

Not enough sleep is the reason ___ many people suffer from fatigue.

A. why

B. where

C. whatever

D. although

Select your answer:

Other quiz:

Mesopotamia Vocabulary › View

This word means a small stringed instrument similar to a lute.

A. Cuneiform

B. Oud

C. Gilgamesh

D. Heliocentric

Grammar › View

I want to go now. Here now is a/an …………………………

A. adverb

B. adjective

C. verb

D. noun