Final answer:
The question lacks sufficient data to accurately calculate the Sun's gravitational force on a 75 kg man on Earth. The provided options do not represent the force of the Sun's gravity, and are instead more indicative of Earth's gravity acting on the man.
Step-by-step explanation:
To calculate the gravitational force of the Sun on a 75 kg man on Earth, we would use Newton's law of universal gravitation. However, the question parameters do not provide the necessary distance between the man and the Sun or the mass of the Sun to perform the calculation. Typical calculations of gravitational force focus on objects within a given gravitational field such as Earth's, not the Sun's influence on a person on Earth, which is negligible compared to Earth's gravity. Therefore, none of the options (A) 735 N, (B) 750 N, (C) 725 N, (D) 710 N represent the force of the Sun's gravity on the man. Normally, the weight of a 75 kg person on Earth would be around 735 N due to Earth's gravity, not the Sun's. An approximation for the Sun's gravitational force on a human would be based on the gravitational constant, the mass of the person, the mass of the Sun, and the distance between the Sun and the person (Earth's orbital radius around the Sun).