Which is correct?

Compare

Appropriate

Which is correct?

Obvious

Annual

Which is correct?

Suppose

Mask

Which is correct?

Nothing

Rely

Which is correct?

Cell

Impossible

Which is correct?

Transparency

Compare

Which is correct?

Transparency

Obvious

Which is correct?

Annual

Impossible

Which is correct?

Nothing

Suppose

Which is correct?

Drug

Odd 

Which is correct?

Microscope

Rely

Which is correct?

Suppose

Drug

Which is correct?

Compare

Mask

Which is correct?

Cause

Appropriate

Which is correct?

Odd 

Obvious