Incomplete question. The Options read;
A. The year purchased
B. Brian's classmates
C. The amount of memory
D. The type of operating system
Answer:
B. Brian's classmates
Step-by-step explanation:
Remember, the question is concerned about "the individuals" in the data set, so the year they purchased their computer, neither is the amount of memory of the computer and the type of operating system can be classified as individuals in the data set.
Hence, we can correctly say, only Brian's classmates are the individuals in this data set.