Final answer:
To protect against the loss of sensitive data in the future, implementing a container for PII data, using encryption keys, and employing stronger authentication algorithms are all effective measures.
Step-by-step explanation:
The BEST way to protect against the loss of sensitive data in the future when using mobile devices is to implement a container that wraps PII (Personally Identifiable Information) data and stores keying material directly in the container's encrypted application space (option A). This allows for secure storage and transmission of sensitive data, even if the device is compromised or wiped.
Using encryption keys for sensitive data stored in an eFuse-backed memory space that is blown during remote wipe (option B) can also provide protection, as it ensures that the data cannot be recovered after a wipe command.
Issuing devices that employ a stronger algorithm for the authentication of sensitive data stored on them (option C) can add an extra layer of security and protect against unauthorized access to the data.