A. Ballet is a dance forma that encourages strong muscles and posture. Ballet is one of the most difficult styles of dancing (only to be able to do the famous <em>en pointe</em> the dancer needs at least one year of training), as well being one of the most taxing to the body (its an activity that competes with American Football for most injuries), that makes it necessary for the dancers to become fit so they can properly realize this type of dance.
It's to show an exception (which is often the purpose of "yet") because in the first clause it identifies an action, then then it's like "but wait, maybe the action didn't really get going" in the second half of the sentence
The second choice: <span>My friends cheered as I scored the winning goal.</span>
Answer:
For an example: Hey, how are you? But without this [,] It would be Hey how are you?. You should always take a small pause when talking
Explanation: