An ingenious rock like granite can change into a very different sedimentary rock like sandstone. what processes must have acted on the granite over the years to change this igneous material into sedimentary rock?

Granite is an igneous rock that is composed of four minerals. These minerals include quartz, feldspar, mica, and hornblende. Granite is formed from the solidified silicic magma. This happens within the Earth’s crust. It can be exhumed, i.e. it is brought closer to the surface. This is done via extensive erosion of the rock layers that are present above the granite through the process of faulting. Once the granite is exposed, it is subjected to the usual weathering and erosion, and this links it to the sedimentary part of the rock cycle.

since there isn't any suggested answers i will give you the reason and hopefully you can figure it

south africa, or rather all of africa, has not been in the location in which it is nowadays throughout the geological past. after the super-continent pangaea started to break apart, gondwanaland, in which was africa, moved further south, and parts of it came to be very close to the south pole. because the climate in this part of the world is very cold due to the very dispersed sun rays in there, what is now south africa, started to freeze, and the conditions were right for the formation of glaciers. the glaciers existed up until the period when gondwanaland started to break apart and what is now africa started to move towards north, sp it warmed up and the glaciers melted.