The Alternator is the only one from this list that I know is a car part so I chose that one
Answer:
Signal the driver behind you when it is safe to pass by turning on your four-way emergency flashers.
Avoiding casualties is the top priority when driving, the other choices given do not put whether there are cars in the other lane into consideration, therefore making them incorrect. Signaling the driver when it is safe gives you the time and them the gateway to pass, making a nice interaction keep you both alive.
Answer:
Part A:

Part B:
(Psi)
Explanation:
Part A:
Line Pressure is 1500 KPa
We need a conversion factor which converts KPa to lb/ft^2.

In order to convert 1500 KPa to lb/ft^2, we proceed as:

1500 KPa is 31328.145 lb/ft^2
Part B:
We will use the same procedure we did in Part A:
1 ft= 12 in

Converting 

(Psi)
1500 KPa is 217.55656 lb/in^2 (psi)