Lysis of cells by complement is finalized by the formation of:

Correct Answer: C

Rationale: Membrane Attack Complex lyses cells; C1q starts classical, immune complexes trigger, and properdin stabilizes alternative.

Correct Answer: B

Rationale: It removes excess interstitial fluid ; blood production is bone marrow, oxygen is blood, and digestion is gastrointestinal.

Correct Answer: B

Rationale: The small intestine absorbs fats into lymph; stomach and large intestine don't, liver processes.

Correct Answer: C

Rationale: The thoracic duct drains all but the right arm , which goes to the right lymphatic duct.

Correct Answer: B

Rationale: Plasma leakage provides lymph proteins; RBCs don't leak, digestion adds fats, marrow makes cells.