Supply change practice worksheet. Please help. If you know how to do this, I have more question like this. Picture down below
Event: The autoworkers union wins higher pay for workers.

A) 1

B) 2

C) 3

D) 4

The factor that caused the effect in the previous question is

A) Resource/ Input Price

B) Technology

C) Taxes

D) Quotas

E) Subsidies

F)Weather

G) Future Price/ Expectation

H) Number of Sellers

I) Price of Good (QS change)