What is the meaning of the word steroid as it is uses in the second sentence? one of them was a steroid object.

it means one of them was a strength enhancing object it would be more helpful if i saw the full context but thats all i can tell you

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.)