Question

which excerpt from hamlet, act i, scene i is a stage direction? a platform before the castle. enter to him bernardo. bernardo: whos there? francisco at his post

Explanation:

Stage - directions in plays describe the setting, character entrances and exits, and actions. "Enter to him BERNARDO" indicates a character's entrance, which is a stage - direction. "A Platform before the Castle" is a setting description, "Bernardo: Who's there?" is dialogue, and "FRANCISCO at his post" is also a setting - related note but not as typical a stage - direction as an entrance.

Answer:

B. Enter to him BERNARDO