How to clear data in drive C?

Excuse me, could you please elaborate on the process of clearing data in drive C? I'm interested in understanding the steps required to ensure that all data is securely removed from this drive, and I'm wondering if there are any specific precautions I should take to avoid any potential issues or data loss. Additionally, I'm curious if there are any recommended tools or software that can assist in this process. Thank you for your time and assistance.