Read the excerpt from "Morte d'Arthur” by Alfred, Lord Tennyson.But when I look’d again, behold an arm,Clothed in white samite, mystic, wonderful,That caught him by the hilt, and brandish’d himThree times, and drew him under in the mere.

The lines describe an arm appearing from the water, taking the sword, waving it three times, and pulling it beneath the lake. This happens after Sir Bedivere throws the sword into the mere, so the correct choice is “what happened after Sir Bedivere threw the sword.”

AI-written and checked against the verified answer.