Complete each analogy with the appropriate word.

wood is to fire as food is to
grinning is to cheerful as teetering is to
conniving is to scheming as terrible is to
mournful is to sad as gluttonous is to

choices: substance, precarious, voracious, abysmal

1. Wood is to fire as food is to substance. - Wood creates fire the same way food is substance for people (plus here you have to use a noun, and substance is the only noun here)
2. Grinning is to cheerful as teetering is to precarious - precarious is something that is not balanced, and can fall at any moment
3. Conniving is to scheming as terrible is to abysmal - abysmal is something that is extremely bad or terrible
4. Mournful is to sad as gluttonous is to voracious - voracious means insatiable, always craving more and more

The correct answer is a