Spot the Weak Line B2-C1

In each pitch, one sentence is weak, unclear, or inappropriate. Choose the sentence that is the weak line.

Choose the sentence that is the weak line.
Choose the sentence that is the weak line.
Choose the sentence that is the weak line.
Choose the sentence that is the weak line.
Choose the sentence that is the weak line.
Choose the sentence that is the weak line.
Choose the sentence that is the weak line.
Choose the sentence that is the weak line.