The answer is B.
"Grandma taught me to make cheesecake" is the only sentence that makes sense when it stands alone.
Answer:

Comic relief is used to give audiences some relief from serious themes and to help prepare them for the next serious scene.
Answer: True
Be brief.
Proofread your message.
Seek other ways to relay your message.
Don't know the fourth one but hopefully that eliminates some of the answers.
Answer:
Did you know that technology has opened the doors for innovation, learning and exploration? Technology has given us the advantage of instant communication worldwide and is an endless hole of knowledge most people can have access to. Technology has greatly improved our way of life from medicine, transportation and personal healthcare.