Final answer:
The question asks about the prime suspects in a kidnapping case and the answer is option d) All of them.
Step-by-step explanation:
The subject of this question is Social Studies, as it involves identifying prime suspects in a crime.
In Social Studies, we learn about how societies function and the role of individuals within them. In this case, we are applying that knowledge to identify potential suspects in a crime.
The answer to this question would be option d) All of them. In a crime investigation, it is important to consider all possible suspects and gather evidence to determine their involvement.