The correct answer is D. died.
The word “succumbed” means to die as a result of a disease or injury. In this case, the man died the day following the day of the accident. This means that he died from his injuries sustained in the accident.
The other options are incorrect because they do not accurately describe what happened to the man. Option A, “surrendered,” means to give up or yield to someone or something. Option B, “yielded,” means to give way or submit. Option C, “fell down,” means to lose one’s balance and fall to the ground. None of these options accurately describe the man’s death.