Correct Answer: C

Rationale: Bell's palsy causes unilateral facial weakness due to cranial nerve dysfunction. The trigeminal nerve (choice A, CN V) controls sensation and chewing, not facial movement. The trochlear nerve (choice B, CN IV) moves the eye, irrelevant here. The facial nerve (choice C, CN VII) innervates facial muscles; its injury (often idiopathic or viral) leads to Bell's palsy, with symptoms like drooping mouth or eye. The hypoglossal nerve (choice D, CN XII) moves the tongue. C is correct, as facial nerve damage is the established cause. Nurses assess symmetry, support eye care (due to incomplete closure), and educate on recovery, typically spontaneous within months.

Correct Answer: B

Rationale: Pain threshold is the point where a stimulus is perceived as pain (
B), per physiological definition the minimum intensity triggering nociception. Unbearable (
A) and highest tolerance (
C) describe tolerance, not threshold. Action to stop (
D) is behavioral, not sensory. B precisely captures the onset of pain recognition, validated by pain studies, making it the best and correct description.

Correct Answer: D

Rationale: All are legally required to justify and safely use restraints.

Correct Answer: A

Rationale: Locking Mr. Gary against will is false imprisonment (
A) unlawful restraint, per law. Privacy (
B) info, assault (
C) threat, malpractice (
D) breach not confinement-specific. A fits the nurse's illegal action, violating Mr. Gary's rights, making it correct.

Correct Answer: B

Rationale: Secondary prevention is early disease detection (
B), per levels e.g., screening. Promotion (
A) is primary, rehab (
C) and complication prevention (
D) tertiary. B best defines secondary's focus, making it correct.