**Core Concept**
The question requires the test-taker to evaluate the accuracy of statements related to the pharmacodynamics and pharmacokinetics of aminoglycoside antibiotics. Aminoglycosides are a class of antibiotics that work by inhibiting protein synthesis in bacteria, specifically by binding to the 30S ribosomal subunit.

**Why the Correct Answer is Right**
Aminoglycosides are bactericidal agents that act on the bacterial ribosome, but they do not have a significant effect on mammalian cells due to differences in ribosomal structure and function. However, aminoglycosides can cause nephrotoxicity and ototoxicity as side effects, particularly with prolonged use or high doses.

**Why Each Wrong Option is Incorrect**
**Option A:** Aminoglycosides are bacteriostatic agents.
* **Incorrect** because aminoglycosides are bactericidal, meaning they kill bacteria directly, rather than inhibiting their growth.

**Option B:** Aminoglycosides are primarily excreted unchanged in the urine.
* **Incorrect** because aminoglycosides are primarily excreted unchanged in the urine, but they also undergo some renal tubular secretion and reabsorption, which can affect their clearance.

**Option C:** Aminoglycosides can cause neuromuscular blockade as a side effect.
* **Incorrect** because aminoglycosides can cause neuromuscular blockade as a side effect, but this is more commonly associated with neuromuscular blocking agents like succinylcholine or rocuronium.

**Clinical Pearl / High-Yield Fact**
Aminoglycosides can cause ototoxicity, particularly with prolonged use or high doses, which can lead to hearing loss or tinnitus.

**Correct Answer: A. Aminoglycosides are bacteriostatic agents.**