Conflict theorist believe that a competition leads to deviance.
b. social inequality leads to deviance.
c. both a and b
d. neither a norb

b. social inequality leads to deviance.

Explanation:

According to the conflict theorist, social inequality will gradually build up the resentment within the lower class toward the upper class citizens.

They see that the wealth that generated by the upper class is depended on the lower class, but  they did not receive as much reward as the upper class. This is why conflict tends to occur between upper and lower class as the society developed. Conflict theorist believed that One way this can be handled is by creating a system that help distribute the wealth through progressive taxation.

  b.

there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.

question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals