You gain health benefits from exercising for a minimum of
a. 10 minutes three times a weekb. 10 minutes two times a weekc. 20 minutes three times a weekd. 20 minutes two times a week

Answer - 20 minutes three times a week

Reason - Help maintain the structural and the body to a constant. 

Ty for waiting :) I was trying to back up my Answer. Thank you for being part of this community and allowing me to answer - Johny

Hit the Like, Heart. Your an awesome person!! :) 

True,  spain conquered the incas and the aztecs for their gold and silver. 

"d. the battle of quebec began the french and indian war and the attack on fort duquesne ended it." is your answer this is because the war and attack included washington and his people.