Select the correct direct form of the given sentence.

The teacher commanded the students not to shout.

The teacher said to the students, "Don’t shout.”

The correct direct form of the given sentence is The teacher said to the students, "Don't shout.”

The other options are incorrect:

• The teacher said to the student, "You should not shout.” This is incorrect because the command is addressed to the students, not to a single student.
• The teacher told to the students, "You must not shout.” This is incorrect because the reporting verb "told" is less direct than the reporting verb "said."
• The teacher says to the students, "Do not shout." This is incorrect because the tense of the reported speech should be the present tense, not the present progressive tense.