The question asks for a synonym (مرادف) of the word جميل, which means "beautiful" or "good-looking" in Arabic. A synonym is a word that shares the same or a very similar meaning.
Among the options, وسيم means "handsome" or "good-looking" and is the closest synonym to جميل. Both words describe physical attractiveness or aesthetic appeal. The remaining options do not share this meaning: قصير means "short" (describing height or length), طويل means "tall" or "long," and يشع means "radiates" or "shines" (a verb, not an adjective describing appearance in the same way).
When answering synonym questions in Arabic, focus on words that belong to the same part of speech and express essentially the same concept. Here, both جميل and وسيم are adjectives describing physical beauty.