The answer is c. to your question
Answer:
Ancient European explorers would not have went far without the Chinese.
Explanation:
You have to remove the comma because it results in an unnecessary pause.
Answer:
Good evening ladies and gentlemen....
^That is the the part you need to choose^
Verb: the word "asked" is the action of requesting information.
Answer:
The sentence it will introduce will be contrasting to the sentence(s) before that.
Explanation:
E.g. I woke up late. <em>However</em>, I got to school on time.
["However" here contrasted the idea that "I" might be late for school since "I" woke up late]