The Earth is composed of many layers, and if the iron in its core is

The Earth is composed of many layers, and if the iron in its core is moved the Earth’s magnetic field is changed, sometimes more significantly before scientists can predict.
A- the iron in its core is moved the Earth’s magnetic field is changed, sometimes more significantly before
B- the iron in its core moves significantly it changes the Earth’s magnetic field, sometimes more significantly than
C- It moves the iron in its core it changes the Earth’s magnetic field, sometimes more significantly,
D- they move the iron in the core it changes the Earth’s magnetic field, because sometimes more significantly than
E- they move the iron in the core the Earth’s magnetic field is changed, sometimes more significantly



Hi folks .. this question is from ready4gmat app freely available . I marked A