It depends on how blocked the filter is. It could be blocked enough that it won't let the vehicle run at high speed, but still allows enough fuel through to start the engine.
it may be hard to start, stall, or stop running altogether.
Hard to start, stalling, poor performance. Replace it an you will then know if it was needed.
Needs tune-up? fuel filter? Air filter? Plugged catalytic converter? Needs tune-up? fuel filter? Air filter? Plugged catalytic converter?
Yes, if it is clogged.
Fuel filter and fuel pump needs to be replaced.
Yes
if changing the fuel filter, and it still stalls out. you have a problem with the fuel not getting to engine.
Needs a battery
Could be as simple as a very dirty fuel filter. I would start with replacing the fuel filter.
Yes
Yes, most definitely. No fuel and the engine will not start.
Weak fuel pump? Bad fuel/air filter? Water in fuel?