Question

Question was provided via image upload.

Explanation:

Step1: Determine the operation

To find the total data used by Samir and Jillian, we need to add their individual usages. So the operation is "sum".

Step2: Identify the comparison value

The combined total data they can use is 8 GB. So we compare the sum of their data to 8 GB.

Answer:

First dropdown: sum
Second dropdown: 8