Hint: At first think about the chemical formula and structure of Dettol so that you can get some idea about the constituents of it. The chemical formula of Dettol is ${C_8}{H_9}ClO$. Dettol is disinfectant and antiseptic.
Dettol contains chloroxylenol (comprises $4.8\%$ of dettol’s total admixture), terpineol and isopropyl alcohol. Chloroxylenol acts as an antiseptic and disinfectant used for skin disinfection and cleaning surgical instruments. Terpineol which is a monoterpene alcohol has been isolated from a variety of sources such as cajuput oil, pine oil and petitgrain oil. Dettol contains all of the above compounds so the answer is D.
Chloroxylenol is the active ingredient in Dettol. It comprises $4.8\%$ of Dettol’s total admixture, and the rest is made up of pine oil, isopropanol, castor oil, soap and water. Dettol’s antiseptic property comes from chloroxylenol.