This question asks for a synonym (مرادف) of the word سريع (fast/quick).
The word عاجل means "urgent" or "hasty/swift" and is a recognized synonym of سريع in Arabic. Both words convey the idea of speed and quickness. In classical and modern Arabic usage, عاجل is used to describe something that happens quickly or without delay.
The other options do not qualify as synonyms:
سريح is not a standard Arabic word with an established meaning related to speed.
نشيط means "active" or "energetic." While an active person might be fast, the word itself describes energy level, not speed.
بطئ means "slow" - the antonym of سريع, not a synonym.
When studying Arabic synonyms, note that سريع shares meaning with words like عاجل and خاطف, all conveying different nuances of quickness.
