Explanation

Option C is the generally accepted prediction because as the sun becomes a red giant, it will expand to engulf Mercury, Venus, and likely Earth. Option A is less accurate because the expansion is expected to consume inner planets first. Option B is incorrect because predictions suggest that while outer planets might be affected by stellar winds or subsequent changes, swallowing all of them is not the primary predicted outcome for the initial red giant phase. Option D is incorrect because the sun's life cycle predicts significant structural changes after hydrogen depletion.