I've written revisions to correct these in bold font:
Many Americans get uneasy when they hear the words "political revolution". But if a person thinks about it, they realize that our country was built by a small group of revolutionaries. You know some of their names well-- George Washington, Nathan Hale, Patrick Henry-- But you may not recognize others. They say one of the greatest but least known Revolutionary War heroes is Francis Marion. If someone saw the movie The Patriot, they would know it is about Francis Marion. In history books, it says Marion was called "The Swamp Fox." He led small bands of men in guerilla warfare against the British. They marched onto a battlefield in orderly rows, faced their enemies, and then fired shots at them. Their fighting spirit and Marion's tactics really caught you by surprise. Faced with fast-moving men who had an intimate knowledge of the surrounding swamps, they never knew when The Swamp Fox would strike. Francis Marion was a great military hero and a political revolutionary.
D. Bone mineral density is considered a biomarker of biological aging.
Hope this helps. :)
Answer:
B. His efforts to heal render him earnest and genuine.
Explanation:
B. Maybe you've already heard the news: Jamie and Alex are moving to Northern California!
Northern should not be capitalized.
The man in the locker room put on his uniform. He headed out to the field with the rest of his teammates, the crowd cheered loudly. The coach said it was his turn, so the man took his place at the line. The snapper snapped the ball, and the man ran to an open spot on the field