Answer:
Array of Strings
Step-by-step explanation:
I believe the best data type for this information would be an Array of Strings. This array would have a fixed size of 5 elements. One for each one of the five electives that the student will have. Then the individual electives will be String elements that are saved in the 5 indexes of the Array. This would allow all of the electives to be bundled into a single variable and accessed together or individually by the user. This would be the best and most efficient data type to store this information.