We are flying from San Francisco to Australia. Looking back the last thing we observe of San Francisco is the Golden Gate Bridge. Choose the answer that best explains why the bridge was the last bit of San Francisco that we observed. Group of answer choices

because of the water vapor in the air everything disappeared in the haze. The bridge was the largest structure so we saw it last.

as we traveled away from San Francisco the bridge was the last thing we saw because of large its size.

50 miles out is as far as is possible to see through air.

Since the Earth is a sphere the last thing that was observed was the tallest: the bridge.