✔ Correct Answer: C. expand into a red giant and possibly swallow the inner planets,

The correct answer to the question “The sun is expected to exhaust its hydrogen fuel in about 5 billion years. What will be its effect?” is expand into a red giant and possibly swallow the inner planets,. This question belongs to Everyday Science. Practice the related questions below to master this topic for your FPSC, PPSC and NTS tests.