**Core Concept**
The question tests knowledge of **adverse effects of beta-2 adrenergic agonists**, specifically **salbutamol**, a commonly used medication for **asthma** and **chronic obstructive pulmonary disease (COPD)**.

**Why the Correct Answer is Right**
Since the correct answer is not provided, let's discuss the common adverse effects of salbutamol, which include **tremors**, **anxiety**, **palpitations**, and **hypokalemia** due to its **beta-2 adrenergic receptor** stimulation.

**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific option, we cannot determine its correctness.
**Option B:** Similarly, without the option, its validity cannot be assessed.
**Option C:** The same applies to this option.
**Option D:** This option's correctness is also unknown.

**Clinical Pearl / High-Yield Fact**
A key point to remember is that **salbutamol** can cause **hypokalemia** by promoting the uptake of potassium into cells, which is a critical consideration in patients with **cardiac disease**.

**Correct Answer:** Not provided in the query.