Which gestalt principle suggests that the human mind groups similar elements within an artwork where they build onto a larger concept?

Closure

Explanation:

Within an artwork, there might be different individual elements that correlate to create a larger concept. In such a situation, the human mind will group the elements together as a whole. This phenomenon follows the closure principle.

for many centuries, the catholic church has been a patron of the arts. the church has used various scientific methods to maintain its power.

not 100% sure though!