You have to find what the letter stands for in an equation
El Humanismo renacentista es un movimiento intelectual, filosófico y cultural europeo estrechamente ligado al Renacimiento cuyo origen se sitúa en la Italia del siglo XV (especialmente en Florencia, Roma y Venecia), con precursores anteriores, como Dante Alighieri, Francesco Petrarca y Giovanni Boccaccio.
Answer:
I would go with the two region's along the river Lower Egypt & Thebes
Explanation:
Ancient Egyptians were highly dependent on agriculture so they'd need fresh water
I believe the correct answer is C