Final answer:
For driving instruction, a learner's permit is required. In the context of experiments, an informed consent form is necessary; for minors, parental consent is needed.
Step-by-step explanation:
The document that must be completed and signed by a student before any driving instruction can be given is a learner's permit. This permit indicates that the student has been granted provisional permission to drive under certain conditions, typically while supervised by a licensed driver. Before obtaining a learner's permit, students may need to pass a written test covering the rules of the road and traffic laws. Once a student has a permit, it generally allows for on-the-road driving instruction to begin.
In the context of participating in an experiment, however, the required document is an informed consent form. This ensures that participants are aware of what the experiment involves, including any potential risks. It is a guarantee that participation is voluntary and that they can opt out at any time without repercussions. When participants are minors, a parental consent form is needed, which must be signed by the child's parents or legal guardians.