What keeps the Earth in its orbit? (10 Points)

the Sun's rotating speed

the Sun's gravitational pull

the Earth's rotatation

The Earth's location in relation to other planets

Which is required for sexual fissiondiploid cell productionmeiosis

Ineed to know why d is the correct answer asap

During an experiment, readings for blood pressure in a persons body were found to be constant . however , when he measured by a different blood pressure cuff , the readings differed by 15 points for each reading. this difference indicates that the results are