Why did pope Gregory and Henry IV come into conflict?

Options:
The pope claimed the authority to remove the emperor from the throne
The pope named a different emperor to replace Henry
Henry’s land was seized by the pope
Henry tried to remove the pope from power

The correct option is: The pope claimed the authority to remove the emperor from the throne.

Pope Gregory VII and Henry IV came into conflict primarily due to a power struggle over the investiture controversy. This controversy arose from the pope's claim of the authority to appoint and remove bishops, which interfered with the emperor's traditional right of investing high-ranking Church officials. Henry IV wanted to retain his power to appoint bishops and challenged Gregory's authority, resulting in a conflict between them.