Final answer:
The flooding of the Nile River influenced the division of Egyptian seasons, leading to their three-season calendar and impacting their agricultural practices and religious concepts.
Step-by-step explanation:
Of the choices provided regarding the influence on the division of Egyptian seasons, the correct answer is Option 1: The flooding of the Nile River. The ancient Egyptians divided the year into three seasons based on the Nile's cycle: akhet (inundation), peret (growing/emergence), and shemw (harvest). The predictable flooding of the Nile was integral to the agricultural and religious aspects of Egyptian life, as it provided nutrient-rich soil favorable to agriculture and influenced the development of the concept of Ma'at, representing order and cosmic justice.