Question

insistent has the same or almost the same meaning as:
omninous
banner
continual
knott

Explanation:

"Insistent" means persistent in demanding something. "Continual" means happening frequently and repeatedly, which is close in meaning. "Ominous" means threatening or foreshadowing evil or danger. "Banner" is a flag or a long strip of cloth with a slogan. "Knotty" means full of difficulties or complex.

Answer:

C. continual