Which of the following levels of control should be assigned when a software failure may...

In the context of software safety, "Level of Control" (LOC) is used to classify software based on the severity of the consequences of its failure. LOC I - Autonomous Time Critical is assigned to software where failure could result directly in a mishap with significant consequences. This level demands the highest safety controls and rigorous testing to mitigate risks.

References:

RTCA DO-178C, Software Considerations in Airborne Systems and Equipment Certification.

NASA-STD-8739.8, Software Assurance Standard.