**Core Concept**
The management of acute bronchial asthma involves the use of bronchodilators to relax bronchial muscles and improve airflow. However, certain medications can worsen asthma symptoms or have limited efficacy during an acute attack.

**Why the Correct Answer is Right**
The correct answer is a medication that can actually exacerbate bronchial smooth muscle constriction, thereby worsening asthma symptoms. This is because it is a cholinergic agonist that stimulates the muscarinic receptors in the bronchial smooth muscle, leading to increased contraction and bronchoconstriction. This is in contrast to bronchodilators like beta-2 agonists that relax bronchial muscles and improve airflow.

**Why Each Wrong Option is Incorrect**
* **Option A:** This medication is a beta-2 agonist that acts as a bronchodilator, making it useful during an acute attack of bronchial asthma.
* **Option B:** This medication is an anticholinergic agent that blocks the action of acetylcholine on muscarinic receptors, leading to bronchodilation and is useful in asthma management.
* **Option C:** This medication is a corticosteroid that reduces inflammation in the airways, making it useful during an acute attack of bronchial asthma.

**Clinical Pearl / High-Yield Fact**
During an acute attack of bronchial asthma, the use of a bronchodilator such as albuterol is crucial to rapidly improve airflow and oxygenation. However, the use of a cholinergic agonist like this correct answer can worsen asthma symptoms and should be avoided.

**Correct Answer:** D. This medication is a cholinergic agonist that can worsen asthma symptoms and is not useful during an acute attack of bronchial asthma.