**Core Concept**
The pH of amniotic fluid is a critical parameter that reflects the acid-base status of the fetus. It is a key indicator of fetal well-being, and alterations in its pH can have significant implications for fetal health.

**Why the Correct Answer is Right**
The pH of amniotic fluid is maintained by the buffering capacity of the amniotic fluid itself, which is primarily composed of water, electrolytes, and fetal waste products. The fetal kidneys excrete a small amount of urine into the amniotic fluid, which contributes to its pH. Normally, the pH of amniotic fluid ranges from 7.0 to 7.5, with a mean value of approximately 7.2. This slightly alkaline pH is essential for fetal development and proper functioning of the fetal nervous system.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the pH of amniotic fluid is not as acidic as blood (pH 7.35-7.45).
**Option B:** This option is incorrect because the pH of amniotic fluid is not as alkaline as the intestinal tract (pH 7.5-8.5).
**Option C:** This option is incorrect because the pH of amniotic fluid is not as close to neutral as water (pH 7).

**Clinical Pearl / High-Yield Fact**
A pH of amniotic fluid below 7.0 or above 7.5 can indicate fetal acidosis or alkalosis, respectively, and may necessitate prompt medical intervention to ensure fetal well-being.

**Correct Answer:** C. 7.2