7. how does regular exercise to reduce the effects of mental stress? a. regular exercise gets you away from the home or office and away from stress. b. people who regularly exercise are happy people and are fun to be around. c. regular exercise gives you better mental discipline, so you're better able to ignore stress. d. regular exercise has been shown to reduce the physical effects of stress.

D. Regular Exercise has been shown to reduce the physical effects of stress.

A wouldn't be correct because at home, you can find plenty of time to relax.

B would be wrong because it is opinion based and would be extremely difficult, if not impossible to experiment for.

And C would be wrong because mental discipline doesn't necessarily means you can take away stress.

Hope this helps!

 ~GeeksandNerds

best answer is f