Which from following plants is useful to extract analgesic compound from it ?

Step-by-step solution

Wintergreen oil contains methyl salicylate, which is widely used as an analgesic compound in various pain-relieving ointments and balms. Turmeric contains curcumin, which is primarily known for its anti-inflammatory and antiseptic properties. Cinnamon contains cinnamaldehyde, used mainly as a flavoring agent and has antimicrobial properties. Citrus fruits are rich in citric acid and vitamin C. Therefore, wintergreen is the plant useful for extracting an analgesic compound. Answer: Wintergreen