Which of the following is a hardware component used to hold the BitLocker encryption key and ensures encrypted data is not accessed in the event a hard drive is lost or stolen

TPM (Trusted Platform Module) is the correct answer to the following question.

Explanation:

Because TPM is the computer chip which protects your system data and store all keys and access of data that is encrypted by these keys. So that's why TPM is that hardware component which is used to contain the encryption keys and that data is not accessible to any other person's whether your hard drive will be lost or stolen by anyone.