Which sentence includes an announcement phrase that should be eliminated to make the statement more concise? (10 points)
a
Assigning lockers to middle school students is an effective way to teach them time management.
b
Lockers should be provided to middle school students so that they can learn time management.
c
Middle school students would learn time management if they were provided lockers.
d
This essay proves that middle school students should have lockers to learn time management.