Question

read the excerpt from its our world, too! young people who are making a difference.
at halftime, as homecoming floats circled the field,
allison gibbons, a member of the student council,
entered the press box, stood before the microphone, and
asked for everyones attention. the crowd grew silent as
she began to read the letter.
i was watching the crowd while allison read it, andy
said. when she finished, there was silence, and then
almost everyone stood up and cheered. all the students
stood up. and the football players were all clapping. it
was a wonderful feeling to know that we had people
behind us.
why does the crowd grow silent after the speech?
the crowd is angry because they feel attacked.
the crowd is moved by the students compassion.
the crowd is puzzled about the students letter.
the crowd is saddened because they feel ashamed.

Explanation:

The text describes a scene where a student reads a letter. After the speech (reading the letter), the crowd grows silent. Then they stand up and cheer. The silence is likely because they are moved by the students' compassion (the content of the letter). There is no indication of anger (no attack - related context), puzzlement (no confusing elements described), or shame (no such emotion - related cues).

Answer:

The crowd is moved by the students' compassion.