Hi,

There is no choice  between center based online exam or remote proctored. The MET 2021 will be held in either of the two methods based on the situation considering the COVID measures. You have to apply normally for the exam and the mode of examination will be informed later on.

For more information you can refer to this link: https://manipal.edu/mu/admission/indian-students/online-entrance-exam-overview.html

I hope this helped you.