Answer:
Option A is correct.
Step-by-step explanation:
Firstly, it is given that Sam wants to predict who will be selected as the seventh-grade student council representative. This signifies that a representative for 7th grade is needed, not for the entire school or any other class.
So, the best possible answer is option A: one hundred random students from the seventh grade.
Option B is wrong as representative is not needed for the entire school. Option C is not feasible as 100 students cannot be chosen from an entire population as it is a possibility that there cannot be many thousand students from 7th standard. option D is not true either as the representative is not needed for the school.
