Perovskite's effectiveness in solar cells prompts researchers to compare it with other minerals to determine what?

• A. That perovskite alone will solve all solar energy problems
• B. Whether other minerals are as effective as perovskite
• C. Whether perovskite requires no research
• D. Whether solar cells must use perovskite exclusively

Answer: (B)

The main idea is to assess relative performance by comparing perovskite with other minerals to see if those minerals can match its effectiveness in solar cells. This helps researchers understand whether there are viable alternatives or if perovskite stands out, guiding future research and material choices. The best answer captures the purpose of the comparison: to determine whether other minerals are as effective as perovskite. The other options imply extremes or assumptions not rooted in the idea of comparing performance, such as expecting perovskite to solve all problems, assuming no further research is needed, or requiring exclusive use of perovskite.