Question

i will have to read the sign next to the door in order to know whose room this is.
which sentence uses the same definition of the word sign?
a. my aunt knows how to sign, which lets her talk to deaf people.
b. you should always sign your name at the bottom of a friendly letter.
c. get your parents to sign the permission form, so you can go on the field trip.
d. the students talked loudly even though a sign in the hall said \quiet please.\

Explanation:

In the original sentence, "sign" refers to a written or printed notice (like a sign next to a door). In option D, "sign" also means a notice (the sign in the hall with "Quiet please"). Option A uses "sign" as a verb for sign language, B and C use "sign" as a verb meaning to write one's name.

Answer:

D. The students talked loudly even though a sign in the hall said "Quiet please."