If earth were replaced by an object with the same mass but much smaller in size, would the moon continue to orbit the new object, fall into it, or fly off into space? why?

Pllsss read the following passage: molten rocks deep inside earth cool and form rock a. the shifting of tectonic plates exposes these rocks. wind and water break rock a into small pieces. these pieces are carried over long distances and deposited at a certain location. more and more small pieces of rocks collect in layers one over the other over a period of several years and finally form a single rock called rock b.which statement is most likely correct? rock b may have fossils. rock a may have sediments. rock b may be formed due to intense heat and pressure. rock a may be formed due to compacting and cementing.