The$\_\_\_\_\_\_\_\_\_\_\_\_\_$technique is used to estimate project duration when there is a high degree of uncertainty about the individual activity duration estimates. This technique uses 'probabilistic time estimates'$--$duration estimates based on using optimistic, most likely, and pessimistic estimates of activity durations rather than one specific or discrete duration estimate.

Question $1$ options:

program evaluation and review $($PERT$)$

critical path method

time series

Gantt chart