**Core Concept**
The giant's rollover test, also known as the roll-over test or the supine pressor test, is used to assess **supine hypertension** in pregnant women, particularly those with **pregnancy-induced hypertension (PIH)**. This test evaluates the effects of **supine position** on blood pressure.

**Why the Correct Answer is Right**
Although the specific details of the correct answer are not provided, the roll-over test typically involves measuring blood pressure in different positions to identify **supine hypertension**, which can be a concern in PIH due to the potential for **venous return** and **cardiac output** alterations. The test is usually performed in the third trimester.

**Why Each Wrong Option is Incorrect**
**Option A:** Without the specifics, we cannot directly address this option, but typically, the test is not done at an extremely early gestation age.
**Option B:** Similarly, without details, we cannot assess its correctness directly, but the test's timing is crucial for diagnosing issues related to PIH.
**Option C:** The test's timing is based on when PIH becomes a significant concern, usually later in pregnancy.
**Option D:** This option would be incorrect if it suggests a time that is not aligned with the typical gestation period when PIH is a concern.

**Clinical Pearl / High-Yield Fact**
The roll-over test is a simple, non-invasive method to assess the risk of **supine hypotension syndrome**, which can occur when the pregnant uterus compresses the **inferior vena cava**, reducing **venous return** and potentially leading to **hypotension**. Understanding the physiological changes in pregnancy is crucial for managing PIH.

**Correct Answer:** D. 28-32 weeks