A construction project is broken down into the following $10$ activities:

ACTIVITY IMMEDIATE

PREDECESSOR TIME $($WEEKS$)$

$14$

$212$

$314$

$413$

$52,35$

$636$

$742$

$853$

$96,75$

$108,97$

b$-1.$ Find the critical path.

multiple choice

$1-4-7-9-10$

$1-3-5-8-10$

$1-2-5-8-10$

$1-3-6-9-10$

b$-2.$ How many weeks will the project take to complete?