Question

a brooklyn man was killed thursday afternoon when a snow - laden tree limb fell on him. source: new york times. in this sentence, limb means: any celestial body that revolves around a star; anything maintaining separation by obstructing access; any of the main branches from the trunk or a bough of a tree; a partially opened flower

Explanation:

The context is about a tree - related incident where a snow - laden 'tree limb' fell. In this context, 'limb' refers to a main branch of a tree. The other options do not fit the tree - related context.

Answer:

any of the main branches from the trunk or a bough of a tree