Question

its a weakening of a blood vessel, like a little bubble that swells out from a vein or an artery. in the sentence above, swells has the same or almost the same meaning as: teeters bulges flickers smudges

Explanation:

The word "swells" here means to expand or protrude. "Bulges" also means to stick out or protrude. "Teeters" means to be unsteady, "flickers" means to flash on and off, and "smudges" means to make dirty marks.

Answer:

B. bulges