What is groupthink? a) pressure from above on group members designed to eliminate leadership
b) modification of the opinions of members of a group to align with what they believe is the group consensusc) arguments between group members that result in the dissolution of the groupd) modification of the opinions of leadership to agree with the numerical minority

B) modification of the opinions of members of a group to align with what they believe is the group consensus

Explanation:

Groupthink: In social psychology, the term groupthink was proposed by Irving Janis in 1972, and is defined as a psychological phenomenon that arises in a particular group of people that possesses the desire or need for conformity and harmony in the group members often leads to a dysfunctional or an irrational decision-making outcome.

Groupthink often results in the faulty decision-making process in a try to keep the group members intact.

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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