Why does the Sun have such a strong gravitational pull?

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The question asks: Why does the Sun have such a strong gravitational pull? 
Option 1: temperature. Although temperature influences many processes in astrophysics, it is not the primary factor determining gravitational pull. Gravity depends on mass, not how hot an object is. Temperature alone does not explain the Sun’s gravitational strength. 
Option 2: color. The Sun’s color is related to its temperature and emission spectrum, but color does not determine how strongly it pulls on other objects. Gravitational force is not defined by color. 
Option 3: size. Here, the provided answer key marks 'size' as the correct factor. In the context of this question, 'size' is acting as a stand-in for the Sun’s overall mass or bulk; larger celestial bodies tend to have more mass and therefore stronger gravitational fields. If we interpret 'size' as a proxy for mass, this aligns with the idea that more massive objects exert stronger gravity. 
Option 4: location. While a body's location in space can affect the gravitational influence on a system (e.g., proximity to other massive bodies), the strength of the Sun’s own gravitational pull is not determined by where it is located, but by its mass. The Sun’s location within the galaxy or solar system does not create its gravitational strength by itself. 
In summary, among the given choices, the key labeled as correct is 'size'. If we treat 'size' as representing the Sun’s mass, it would be consistent with the concept that gravitational pull scales with mass; however, in formal physics, the precise determinant is mass rather than size, color, temperature, or location. The other options misattribute the basis of gravitational strength to properties that do not define how strong gravity is.

Earth & Environmental Science 2025-26 Kepler's Laws and Earth's Place in Space S - (40 Minutes ASYNC)

Why does the Sun have such a strong gravitational pull?

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