Select the correct pronoun to fill in the blank for the following sentence.

The newscaster has a very calm voice, __________ is easy to listen to.

Select the correct pronoun to fill in the blank for the following sentence.

The family was excited to go on vacation, __________ arrived at the airport hours before the plane's departure time.

Select the correct pronoun to fill in the blank for the following sentence.

To be successful, a really good realtor should provide the buyer with all the information and __________ should be easy to work with.