Synonym of DESULTORY

Answer: Option D

Obedient : complying or willing to comply with an order or request; submissive to another's authority.
Punctual : happening or doing something at the agreed or proper time.
Regular : arranged in or constituting a constant or definite pattern, especially with the same space between individual instances.
Aimless : without purpose or direction.
Desultory : lacking a plan, purpose, or enthusiasm.

Synonym of Desultory is Aimless