Correct Answer - Option 3 : KISS
Explanation:
KISS — "Keep it simple stupid" is invented by U.S. Navy in 1960.
Principle: It States that most systems work best if they are kept simple rather than made complicated.
It adopted where project scope is very large and complex.
Therefore simplicity should be key goal in project management and complexity should be avoided
Albert Einstein: "Everything should be made as simple as possible, but not simpler." This means that one should simplify the design of a product and success is achieved when design is at its maximum simplicity.
CPM — Critical path method (Minimum duration of the project)
PERT — Event oriented method (Program evaluation and review technique)