Scientists have discovered that the inner core of Earth is a solid while the outer core is a liquid. What is the cause of this observation?

c. The inner core has a lower temperature and higher pressure than the outer core

Explanation:

sorry if its wrong but i know the right answer isnt

" The outer core has a higher temperature and more pressure than the inner core" (PS, I took the test )

before, trains worked using the steam engine. thus, it uses heat so it is crucial to apply heat balance. the steam engine absorbs energy during the stage of boiling water. so, this is the endothermic reaction. when the steam is used to work the piston, it has to release this energy through running the train. the excess energy is released as an exhaust to the chimney. this is the exothermic process because it releases energy to the surroundings.