Clumps, waves are the two plural nouns.
C and B. A past tense refers to the past. Crawls is currently doing, was crawling could be either present or past, so if you have a multiple choice that would be one of them. C is crawled, meaning he was. And D is will crawl, meaning the future.
N = # pounds
$1.65 = price per pound
grapes cost

When you multiply cost/pound by the number of pounds, the result is the cost for however much of the grapes Ryan buys.
Therefore,
m = 1.65n
There isn’t nothing or a picture to answer the following question