The faster magma cools, the smaller the mineral crystals form.

The statement ‘The faster magma cools, the smaller the mineral crystals form’, is false. When you apply a colder temperature immediately unto the magma, the formation of crystals will form rapidly. This is because there is no room for the magma to transition itself from a more formed crystal.

true

Explanation:

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

i think the answer would be b