Final answer:
Storing partial summations and partial maximums in a stack saves computation and improves efficiency by eliminating the need to recalculate these values every time they are queried.
Step-by-step explanation:
The question relates to the concept of data structures in the field of Computers and Technology, more specifically to operations on a stack. When we store partial summations and partial maximums, it allows us to save computation time when repeatedly querying for these values. For example, in a scenario where we require the maximum value in a stack or the summed value of elements up to a certain point, having these partial values already computed and stored means that we don't need to traverse the stack and calculate them from scratch each time a query is made. This greatly improves efficiency and reduces the computational complexity of such operations. Therefore, the correct answer is:
c) It saves computation and improves efficiency.