<b>Concept:</b> Conservative vs Non-conservative force.<br><br><b>Definition:</b> A force is <b>conservative</b> if the work done by the force in displacing a particle from one point to another is <b>independent of the path</b> followed and depends only on the end points.<br><br><b>Property of electrostatic force:</b><br>• Work done depends only on initial and final positions<br>• Work done in a closed loop is zero<br>• Hence electrostatic force is a <b>conservative force</b><br><br><b>Answer:</b> Option (A) conservative