What is the main of this passage?
if you've ever tasted homemade jam, you know the delicious rewards canning can bring. although it is fun and fulfilling, canning is not an easy task. first of all, you need to grow or buy fresh fruit and wash it carefully. then the clean fruit has to be mashed, heated to a boil, and mixed with sugar and pectin to get it to gel. once the fruit is ready, it must be poured carefully into clean, hot glass jars. next, add a lid and submerge the jars in a boiling water bath for about 10 minutes. as they cool, the "pop" of the lids tells you they have sealed.
a. if the lid doesn't "pop," the jar is not sealed properly.
b. the jars used for canning must be hot as well as clean.
c. in addition to fruit, you can also can many vegetables.
d. canning is fun, but it takes a lot of work and knowledge.

Which statement best describes how these paragraphs develop the central idea of the article? a- they elaborate on the idea that the offer has been made with youngsters in mind. b- they provide additional information as to why the prize is a wagon instead of something else. c- they support the idea that the wagon is attractive to youngsters and is a worthy prize. d- they introduce the idea that the newspaper is a generous organization. read paragraphs 4 and 5. the disc wheel coaster wagon is thirty-six inches long and sixteen inches wide. the coaster is built exactly like a high-powered automobile. the disc wheels have rubber tires and true roller bearings. it runs as smoothly as an eight-cylinder automobile. it is built of the strongest wood and is equipped with a reliable hand brake, enabling the owner to stop in an instant. the tongue—usually the first thing about a wagon to break and render the wagon unserviceable—is so stout that a man can jump on it without breaking it.