**Core Concept**
The synthesis of triacylglycerol in adipose tissue involves the condensation of three fatty acid molecules with glycerol to form a triglyceride. This process is crucial for energy storage and is regulated by various enzymes and hormones.

**Why the Correct Answer is Right**
The correct answer involves understanding the role of diacylglycerol acyltransferase (DGAT) in triacylglycerol synthesis. DGAT catalyzes the final step in triglyceride synthesis, transferring an acyl group from acyl-CoA to the 3-position of diacylglycerol, resulting in the formation of triacylglycerol. This enzyme plays a critical role in regulating lipid metabolism and energy storage.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not provide a relevant statement about triacylglycerol synthesis in adipose tissue. Without more information, it's difficult to assess its accuracy.

**Option B:** This option is incorrect because it might be misleading or incomplete. While glycerol-3-phosphate dehydrogenase (G3PDH) is involved in glycerol metabolism, it is not directly responsible for triacylglycerol synthesis.

**Option C:** This option is incorrect because it might be a distractor. The exact details of this option are not provided, making it challenging to evaluate its accuracy.

**Clinical Pearl / High-Yield Fact**
DGAT inhibitors have been explored as potential treatments for obesity and metabolic disorders, highlighting the importance of triacylglycerol synthesis regulation in energy homeostasis.

**Correct Answer:** D.