How are air pressure in a altitude related

Question

How are air pressure in a altitude related

As altitude increases air pressure

As altitude increases air pressure increases

As altitude increases air pressure remains the same

As altitude increase as air pressure increases and then Decrease

Answer 1

As altitude increases, air pressure decreases. This is because the higher you go in the atmosphere, the fewer air molecules there are above you exerting pressure downwards. So, it can be said that as altitude increases, air pressure decreases.