Apsidal precession is the process that causes changes in Earth's orbit and was found to coincide with 100,000-year glacial cycles. Thus, the correct option is C.
The glacial cycle may be defined as a significant global climatic oscillation of the order with a specific rate that is developed by the ice age.
Apsidal precession is the precession of the line that links the apsides of an astronomical body. The regular cycle of apsidal precession takes about 100,000-year.
Therefore, the correct option for this question is C.
To learn more about Glacial periods, refer to the link:
https://brainly.com/question/27413210
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