Appear has two different meanings, and the grammar is not the same in the two cases.fficeffice" />
1. It can mean "seem', as listed in this case.
He appears (to be) very angry today
She appeared to have recoveryed from the bad cold.
2. The other meanings of appear is 'come into sight'
She suddenly appeared from under the bed.
Galileo was convinced that natural phenomena, as manifestations of the laws of physics, would appear the same to someone on the deck of a ship moving smoothly and uniformly through the water as to a person standing on land.
Sunspots appear on the surface of the Sun as dark spots
In the listed question, appear meanings is described in case 1. So we choose A.
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