The correct answer is D. It increased the strength of the Roman Catholic church as Jews and Muslims were expelled or forced to convert.
Step-by-step explanation
The inquisition was a medieval institution of the Catholic church created with the objective to forced to convert, expel or murder the heresy. The Spanish Inquisition was introduced by the Catholic kings of Spain because much of the Iberian peninsula was dominated by the Muslims, Arabs, and jews, this situation caused a progressive hoist in the political positions of those groups mainly Jews. That was the most important reason that the Catholic kings had to introduce the Inquisition in Spain. Nevertheless, other reasons are related to the establishment of a Roman Catholic unit and to get economic resources from the people who were processed by the institution. So, the correct answer is D. It increased the strength of the Roman Catholic church as Jews and Muslims were expelled or forced to convert.