Continental crust is primarily composed of:Group of answer choicesBasaltPartly basalt, partly graniteClay and sandGranite

To answer the question regarding the primary composition of continental crust, let's analyze the given options:

1. Basalt: This rock type is primarily found in oceanic crust rather than continental crust.
2. Partly basalt, partly granite: Although the continental crust can contain basalt, it predominantly consists of granite.
3. Clay and sand: These materials are found on the surface or as sediments but are not the primary constituents of continental crust.
4. Granite: This igneous rock is the main component of continental crust, characterized by its light color and coarse texture.

Conclusion

The correct answer is Granite, as it is the primary rock type that composes the continental crust.