Leading Edge Slats on the Me-109

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Glider says:

If I ask the flying instructor the following what do you think the reply will be:-

What do leading edge slots do, do they:-

a) Delay the stall or
b) Are they anti spin devices

Just wondering if my flying instructor give the same reply, that you who has told us is a CFI would give.

My money is on (A) what do you think?
Today 05:49 PM

To deliver spark to an engines combustion chamber, we use a "spark plug"! Does it plug up the spark? NO, it is just the name of the device used to provide an ignition source.

When we design a spin resistant airplane, we use anti-spin devices to build that spin resistance.

Because folks do not understand the technical terminology, which I been nice enough to explain which is unfortunately lost in the zeal to prove me wrong by a small select portion, the community ends up with all these pointy-tin foil hat theories that have nothing to do with the spin resistant design of the Bf-109.