Difficult—> complex
Think—> realize
Big—> prominent
Make—> manufacture
A comma is a punctuation mark (,) indicating a pause between parts of a sentence. It is also used to separate items in a list and to mark the place of thousands in a large numeral. It can also mean a butterfly that has wings with irregular, ragged edges and typically a white or silver comma-shaped mark on the underside of each hind wing.
I'm. Or sure but I think the answer is d
