The compound that is most reactive towards electrophilic nitration is:

Correct Option is: A. Toluene

Solution:

• In electrophilic nitration, the reactivity of a compound depends upon the electron density present in a compound.
• If the electron density is higher, the high reactive will be the compound towards the electrophilic nitration.
• Toluene contains methyl group which induces electron donating effect which increases the electron density. So, toluene is most reactive towards the electrophilic nitration.