Identify source of Eugenol from following.

Step-by-step solution

Eugenol is a phenylpropanoid compound prominently found in clove oil, constituting approximately 70 % to 90 % of its composition. Among the options: Clove is the primary commercial source of eugenol. Indian gooseberry is noted for vitamin C content, not eugenol. Wintergreen oil consists mainly of methyl salicylate. Citrus fruits contain terpenes such as limonene. Clove is therefore the correct source.