D

由倒数第二句“A man who is worrying about?something has difficulty in eating anything dry．”可知，为某事感到焦虑的人很难吞下较于的食物。have difficulty in?doing sth．意为“做某事有困难”。D项“has a poor appe-tire”意为“没有胃口，不想吃东西”，与原文意思最接近。