Question

multiple-choice question

1. white blood cells use ______ to mark bacteria for destruction.

body
sneezes
antibodies
rewatch

Explanation:

White blood cells (specifically B cells produce, and other immune cells use) antibodies to bind to bacteria, tagging them for destruction by other immune cells like phagocytes. The other options are irrelevant: "body" is too vague, and "sneezes" are a physical expulsion mechanism, not a marking molecule.

Answer:

antibodies