Delete the redundant and irrelevant information to make a clearer sentence. At 9PM this evening, which is the same time I was born, I have to meet with my group on a video call.

Delete "which is the same time I was born,"

Explanation:

This part of the statement holds no relevance to the sentence. Usually, when there are 2 commas surrounding a statement, it indicates that there's extra information.

the sentence that best describes the tone of the passage from the radio broadcast compared to the passage from the book is b. the radio broadcast has a more surprised tone.

consider the text evidence: in the passage from the book, the description is more matter-of-fact. it is simply describing the things resembling little grey snakes, but there is no urgency in the description. on the other hand, in the passage from the radio broadcast, there is definetely urgency (you can tell from the expression used, "good heavens", which clearly indicates surprise.)