Which excerpt from The Call of the Wild best helps readers to visualize how thin Buck has become? And through it all Buck staggered along at the head of the team as in a nightmare. He pulled when he could; when he
could no longer pull, he fell down.
His muscles had wasted away to knotty strings, and the flesh pads had disappeared, so that each rib and every
bone in his frame were outlined cleanly through the loose hide
O Buck refused to move under the rain of heavier blows which now fell upon him. Like his mates, he was barely able to
get up
O Thornton knelt beside him and with rough, kindly hands searched for broken bones. By the time his search had
disclosed nothing more than many bruises and a state of terrible starvation, the sled was a quarter of a mile away.

His muscles had wasted away to knotty strings, and the flesh pads had disappeared, so that each rib and every  bone in his frame were outlined cleanly through the loose hide

Explanation:

Hope this helps!!!

here's some tricks. write on a book that you have read and really enjoyed. first, start by writing down basic event in the book. have your first paragraph be an intro explaining like the author, the reason the book was written if known, and other backround info like that. paragraph two explain what happens in the first few chapters and the signifigance it had. then for paragraph 3, do the same thing but for the middle. i'm pretty sure you get the point for paragraph 4. just rap things up and explain the call to action. for the final paragragh (paragraph 5) , explain your views on the book, the message, ect. tip: something that might is to go onto cliff notes or something and read the anaylisis of each chapter.

some books i recommend;

diary of anne frank

lord of the flies