Final answer:
Xylene > Benzene > Toluene
Step-by-step explanation:
The correct answer is option c) Xylene > Benzene > Toluene.
In electrophilic aromatic substitution reactions, the reactivity of aromatics is affected by the presence of electron-withdrawing or electron-donating groups. Xylene is more reactive than benzene because it contains two methyl (-CH3) groups that are electron-donating and activate the ring towards electrophilic attack.
On the other hand, toluene contains only one methyl group, making it less reactive than xylene. And benzene is the least reactive since it does not contain any activating groups.