The expected $($most likely$)$ times for the project activities are given below.

ID

Description

Predecessor

Duration

$($Day$)$

$1$

Pilot production

None

$6$

$2$

Select channels of distribution

None

$7$

$3$

Develop marketing program

$1,2$

$4$

$4$

Test market

$3,2$

$4$

$5$

Patent

$1$

$10$

$6$

Full production

$4$

$16$

$7$

Ad promotion

$2,3$

$3$

$8$

Quality check & Release

$5,6,7$

$3$

Find the expected project completion time

$34$ days

$40$ days

$44$ days

$30$ days