The correct answer is - True.
The granitic magma is in fact very rich in silica content. It has around 70% silica in its composition.
The granite in this type of magma is composed of quartz, mineral mica, and amphibole, and they all have high content of water in their crystal structures.
The granitic magma can be exclusively found on the continental crust, and it is formed on the places where there's convergent plate boundaries between two continental tectonic plates.
