What factors make earth considered the goldilocks planet? 7th grade academic science

The planet have temperatures not too hot or too cold

A "Goldilocks Planet" is the right distance from its Sun to allow temperatures for liquid water. Not too hot, not too cold.

The Sun is our primary energy source. The energy Earth receives from the Sun is in balance with the energy our planet loses to space:

- Earth reflects an average 30% of incoming solar energy back to space

- Earth's atmosphere absorbs about 20% of incoming solar energy

- About 50% of solar energy reaches the land and oceans and warms them

- Earth emits 70% of incoming energy back to space as heat (infrared radiation)

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the answer is the last option or letter d)