Answer:
<u>he was confused</u>
<u>Explanation:</u>
Note, we are told that, "Anthony awoke to laughing and applauding," in other words, he woke up by an unusual action, "laughing and applauding". This causes Anthony to wonder confusingly what had occurred, which fits in with the definition of the word, "quizzical".
The word quizzical is an adjective that is often used to denote the expression of someone who appears to be confused or amused.
Reservations in this context could mean doubts, such as 'My mom had reservations about going out to shop."
This means that their mom was not sure if she wanted to go shopping or not because she has reasons not to.
Advised
behaving as someone, especially the speaker, would recommend; sensible; wise.