When can you say that you evaluate your activities carefully?

when the audience appereciates your evaluation

Explanation:

well people will have to mark your answer as the best answer. and from that u receive crowns.

~batmans wife dun dun

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.)