Why is andrea del sarto unhappy despite being a skilled painter?

because he is resigned to his place in life and does not have the inner drive to move beyond the fetters. he is weak willed and as such would never be willing to initiate the changes he needs even if he was assured of all of his desires.

we have no idea what story or poem you mean? ?

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.)