Which of the following is an example of remedial action that could be noted on DA Form 348?

The correct choice is additional training requirements, which represents a form of remedial action that may be necessary to address specific deficiencies in a soldier's performance or knowledge. When a soldier does not meet the standards expected for their driving tasks, identifying additional training requirements allows for focused instruction and practice in areas where the soldier needs improvement. This tailored approach enables the individual to enhance their skills and ultimately meet the qualifications needed to operate military vehicles or equipment safely.

Remedial actions documented on DA Form 348 serve to ensure that soldiers receive the support necessary to correct any deficiencies and to maintain safety and operational readiness. By including additional training requirements on this form, leadership can track the training needed to help the soldier become proficient.

Other options like physical examination results, adjustment of training hours, or license upgrade approval do not directly pertain to remedial actions aimed at addressing performance deficiencies. Each of those options serves different administrative or operational purposes, but they do not reflect the immediate need for additional training to rectify a specific problem with a soldier's qualifications or capabilities.