Read the following email message. Complete the email by filling in the blanks. Select the best choice for each blank.

Hi John, I'm writing to update you on the Mars Rover's latest diagnostic report. The 1...... is functioning well, maintaining its daily operation of 2....... However, we noticed during yesterday's check that the 3...... isn't performing at optimal levels. The data transfer rate has dropped to half of the normal 4....... I've already contacted the Control Room at 5...... to look into this issue. Let me know if you need any additional information.

Choose the best option.

The purpose of this email is to 1....... The rover's power system is designed to 2....... According to the guide, if communication is lost, the rover will 3.......