Correct Answer: Agnes Pockels

Solution : The correct answer is Agnes Pockels.

Agnes Pockels, a German chemist, played a crucial role in the development of the present-day science of surface tension. She was one of the first scientists to conduct systematic research on the characteristics of both liquid and solid surfaces and interfaces. Her interest in soap films drove her surface tension studies. She invented several new experimental techniques to study the characteristics of soap films and made several significant discoveries.