Which is NOT a potential hazard of approaching close to an iceberg?

Correct Answer: Option A — The brash ice in the vicinity may clog sea intakes.

Iceberg proximity hazards include sudden calving, underwater rams extending from the submerged hull, and catastrophic capsizing due to melting. Brash ice clogging sea intakes is common in pack ice but does not present a primary mechanical hazard specifically tied to individual large bergs.