c
The presence of electron releasing group like\(-R.-OH\) etc, increases the electron density at o/p position and thus, makes the benzene ring more reactive (at o/p position) towards electrophile. on the other hand, electron withdrawing group like \(-COOH,-NO_{2} \text { etc. If present, }\)

reduces electron density and thus, reduces the activity benzene nucleus towards electrophile. Thus, the order of the given compounds towards electrophilic nitration is