The correct answer is parsimony
Thrift is the act of saving, saving and containing something or something.
Parsimony, as an act of economy, is characterized by being focused on small aspects, that is, a meticulous economy.
When it is said that a particular subject should be treated sparingly, it means that it requires care and attention.
As well as being related to saving, parsimony is also interpreted as a precaution in relation to something.
Acting sparingly is synonymous with being modest in actions, not opting for exaggerations, but only for what is essential or sufficient to supply a certain need.