Question

Read the sentence.
To make sure Luisa arrived on time she left 15 minutes early. Which revised sentence shows the correct punctuation for indicating a pause?

○ To make sure Luisa arrived on time ... she left 15 minutes early.

○ To make sure Luisa arrived on time-she left 15 minutes early.

○ To make sure Luisa arrived on time—she left 15 minutes early.

○ To make sure Luisa arrived on time, she left 15 minutes early.​

Answer 1

Answer:

D. To make sure Luisa arrived on time, she left 15 minutes early.

Not really sure but hope this helps :)