Hello!
The most formal of these is D.
Hope this helps :))
Answer:
"She mixed..." - homophone
"A horse..." - pun
"I left..." - homonym.
Explanation:
Homophones are words that sound the same but are spelled differently, so flour and flower would be homophones.
Homonyms are words that are spelled the same and sound the same but have different meanings, so left as in to leave and left as in the direction are homonyms.
Puns are a method of using words with associated meanings to make jokes that usually involve wordplay. A horse being a stable animal is a pun because horses are kept in stables.
In my opinion, the correct answer among the choices listed above is option A. According to the lecture, debates are very common among dignitaries. These type of people are said to be important because they are at a higher rank. So, most likely these people are involved in discussions and meetings which will surely have debates.
At the time when John F Kennedy delivered his inaugural address the US and the US were locked in the cold war and people were concerned that the world might be destroyed by nuclear weapons.