Answer:
You can show positive attitude towards physical activities by having a goal for youself with motivation, doing regular work out rountine and just have fun
A comma should be after each separate things you are listing. The answer is:
<span>
The
Library of Congress is home to the world's most extensive comic-book
collection, oldest original newspaper collection, and most abundant
collection of cartographic items.</span>
Harshly. whenever you are looking for an adverb it usually ends with an ly. :))