Choice A rationale:

"Phobias are characterized by persistent and irrational fear" (Choice A) is an accurate statement. Phobias are defined by the presence of an intense and irrational fear of a specific object or situation. This fear is persistent and often leads to avoidance behaviors, which can significantly impact the individual's daily life.

Choice B rationale:

"Phobias can be caused by biological factors only" (Choice B) is an inaccurate statement. Phobias can have various causes, including both biological and psychological factors. While there may be genetic predispositions to certain phobias, psychological factors, such as traumatic experiences or learned behaviors, can also contribute to the development of phobias.

Choice C rationale:

"Phobias can be diagnosed based on physical symptoms" (Choice C) is an inaccurate statement. Phobias are typically diagnosed based on the individual's reported symptoms, such as intense fear and avoidance behaviors. There are no specific physical symptoms that directly indicate the presence of a phobia.

Choice D rationale:

"Phobias can be managed with medication alone" (Choice D) is an inaccurate statement. Medication alone is not considered the primary treatment for phobias. While medications like selective serotonin reuptake inhibitors (SSRIs) or benzodiazepines may be prescribed to alleviate anxiety symptoms, the most effective treatment for phobias is psychotherapy, particularly exposure therapy or cognitive-behavioral therapy. These therapies address the root causes of the phobia and help individuals learn to manage their fear.

The correct answer is: D. Blood pressure 90/76 mm Hg.

Clonidine is an alpha-2 adrenergic agonist used to manage withdrawal symptoms, but it lowers blood pressure as a side effect. If the client's blood pressure is already low (90/76 mm Hg), administering clonidine could lead to hypotension, putting them at risk for dizziness, fainting, or more severe complications.

Here's why the other options are not contraindications:

• A. Hypertension: Clonidine is actually used to treat high blood pressure, so it wouldn’t be a contraindication.

• B. Apical heart rate 72 beats/minute: This heart rate is within normal limits, so it wouldn’t prevent administration.

• C. Muscle weakness: While clonidine can cause fatigue, muscle weakness is not a direct contraindication.

Since the client is experiencing withdrawal symptoms like nervousness and unusual sensations ("bones itching"), monitoring vital signs is critical before giving the medication.