6. When you turn the key to start your car,
the automobile engine does not turn over
nor does anything else happen.
Which of the following procedures would
be the first action to take in determining
the cause of the problem?

(1) Change the engine oil for better
lubrication.
(2) Add more gasoline for a longer-
running engine.
(3) Turn on the lights to check the
electrical flow from the battery.
(4) Inspect the exhaust system to check
for emission leaks.
(5) Clean the spark plugs for better
firepower.