The best research questions should be—
a. open-ended, vague, and allow the writer to develop several thesis statements
b. close-ended, specific, and allow the writer to revise my thesis several times
c. close-ended, vague, and allow the writer to develop a thesis connected to the question
d. open-ended, specific, and allow the writer to develop a thesis that answers the question

One person's trash is another person's treasure. instead of discarding unwanted appliances, tools, or clothes, try selling or donating them. karen wants to explain that discarding means "throwing away." which of the following passages has karen written correctly? "one person's trash is another person's treasure. instead of discarding . . throwing away . . unwanted appliances, tools, or clothes, try selling or donating them." "one person's trash is another person's treasure. instead of discarding--throwing away--unwanted appliances, tools, or clothes, try selling or donating them." "one person's trash is another person's treasure. instead of discarding [throwing away] unwanted appliances, tools, or clothes, try selling or donating them." "one person's trash is another person's treasure. instead of discarding (throwing away) unwanted appliances, tools, or clothes, try selling or donating them."