base impossibility
The direction of A below (tendency of a planet without the influence of the sun's gravity) is an ascending motion. The base problem with Galileo's theory is the sun's gravity always exists.
The correct answer is the planets are falling towards a motion. That of the sun. The planets are not falling from a non existent ascending motion towards a fixed point.
This sophistry is compounded by three hundred years of teaching an apple attracts the earth as it falls.