Antonym of DISSIPATE

The correct answer is A. sustain.

To sustain means to keep something going or to keep it from falling or collapsing. To dissipate means to cause something to disappear or to spread out and become weaker.

B. conserve means to use something carefully in order to prevent it from being used up or wasted. C. preserve means to keep something in its original condition or to prevent it from being damaged or destroyed. D. maintain means to keep something in good condition or to keep it working properly.

In the context of the question, the antonym of dissipate is sustain. This is because to sustain something is to keep it going, while to dissipate something is to cause it to disappear or to spread out and become weaker.