Identify the sentence pattern. this book is a thesaurus.

subject-verb
subject-verb-direct object
subject-linking verb-predicate noun
subject-linking verb-predicate adjective
subject-verb-indirect object-direct object

technical documents should be clear and precise. basically, clarity is the key element in a successful technical document.

true

explanation:

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.)

what is the question ?