Which sentence is punctuated correctly? a) instead of complaining, mark covington decided to spend his time: working to save his neighborhood. b) like many other detroit natives, mark covington experienced: job loss as a result of the economic downturn. c) mark covington could think of one way to rebuild his neighborhood: establish a community center and garden: where the vacant lot used to be. need asap

C) Mark Covington could think of one way to rebuild his neighborhood: establish a community center and garden where the vacant lot used to be.

Explanation: a colon is a punctuation mark that is used to mark a major division in a sentence, to indicate that what follows is an elaboration, summation, implication, or explanation of what precedes. From the given options, the sentence that uses the colon correctly, is the corresponding to option C, because it is introducing further information about how Mark Covington wanted to rebuild his neighborhood.

mark twain, real name samuel langhorne clemens, was an american writer, humorist, entrepreneur, publisher, and lecturer. among his novels are the adventures of tom sawyer and its sequel, the adventures of huckleberry finn, the latter often called "the great american novel". wikipedia