Critical path method (CPM) is a step-by-step process by which critical and non-critical tasks are defined so that time-frame problems and process bottlenecks are prevented.
please see attachment for the step by step solution of the given problem.
The Rudolph Rule states that simple ways you can make information stand out and guide or satisfy your audience to important details and highlight important information in your presentation
so i conclude option D is correct for above statement
