Pope gregory vii and emperor henry iv disagreed about a. how serfs and peasants should be treated in feudal society. b. who should select bishops. c. where in europe the church headquarters should be located. d. who could excommunicate people.

The correct answer is option b. "who should select bishops". Pope Gregory VII and Emperor Henry IV had disagreements as part of the Investiture controversy a conflict between church and state that happened in medivial Europe. One of the major disagreements was who would have the power to select the bishops, a conflict that ended with the pope having more power than the emperor in this regard.

The correct answer is b. Pope Gregory VII and Emperor Henry IV did not agree because the pope was against the investiture system since the bishops were getting their positions irregularly and he said that the bishops were not legitimate, while the emperor was totally in favor of the investiture system because he was using it to put his own men in office.

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