Question

people have always observed sunrises and sunsets. all of the following are explanations for why the sun appears to rise and set.

1. an early greek model shows a god named helios, who drove a chariot with the sun from the east to an ocean in the west every day.
2. the greek geocentric model shows earth at the center of a sphere with the sun moving around earth.
3. the scientific revolution heliocentric model shows the sun at the center of the solar system.
4. a chinese model describes how the sun was carried by a crow each day.

the heliocentric model is used by scientists today because the heliocentric model is -
a complicated
b the newest model

Explanation:

Scientists use the heliocentric model today because it is supported by extensive empirical evidence (like planetary motion observations, gravitational physics) that accurately explains celestial phenomena, including the apparent rising and setting of the Sun due to Earth's rotation on its axis. The options provided are incomplete, but the correct reasoning is that it is the most evidence-based, accurate model, not the options shown. However, if we assume the intended correct option (likely missing a choice like "supported by empirical evidence"), but based on the context of scientific validity: the heliocentric model is accepted because it aligns with observable data and physical laws, unlike the mythological or geocentric models which do not match modern evidence.

Answer:

(Note: The provided options are incomplete/incorrect. The actual reason scientists use the heliocentric model is that it is empirically supported, accurately describes solar system mechanics, and explains the apparent sun rise/set via Earth's rotation. If forced to choose from the given flawed options, there is no correct answer, but the intended valid reasoning is the model's alignment with observational and physical evidence.)