**Core Concept**
The anterior choroidal artery (AChA) is a crucial branch of the internal carotid artery that supplies a significant portion of the posterior limb of the internal capsule, the optic tract, and the lateral geniculate body. Ischemia in the AChA territory can lead to a range of neurologic deficits due to the involvement of these critical structures.

**Why the Correct Answer is Right**
The correct answer, D. Predominant involvement of the anterior limb of internal capsule, is incorrect because the AChA primarily supplies the posterior limb of the internal capsule. The posterior limb contains the corticospinal and corticobulbar tracts, which are responsible for motor function. Ischemia in the AChA territory would more likely affect the posterior limb, leading to motor deficits such as hemiparesis (A) and hemisensory loss (B) due to involvement of the sensory tracts. Homonymous hemianopia (C) can also occur due to involvement of the optic tract.

**Why Each Wrong Option is Incorrect**
**Option A:** Hemiparesis is a possible feature of ischemia in the AChA territory due to involvement of the corticospinal tracts in the posterior limb of the internal capsule.
**Option B:** Hemisensory loss can occur due to involvement of the sensory tracts in the posterior limb of the internal capsule.
**Option C:** Homonymous hemianopia can occur due to involvement of the optic tract in the AChA territory.

**Clinical Pearl / High-Yield Fact**
The AChA territory is classically associated with a "three-act" syndrome: act 1, involvement of the optic tract leading to homonymous hemianopia; act 2, involvement of the posterior limb of the internal capsule leading to hemiparesis and hemisensory loss; and act 3, involvement of the lateral geniculate body leading to visual field defects.

**✓ Correct Answer:** D. Predominant involvement of the anterior limb of internal capsule