**Core Concept**
The suspensory ligament of the eye, also known as the suspensory ligament of the lens, is a fibrous structure that plays a crucial role in the support and positioning of the lens within the eye. It is composed of the zonular fibers, which are delicate, elastic fibers that connect the lens to the ciliary body.

**Why the Correct Answer is Right**
The suspensory ligament of the eye, or the zonular fibers, enclose the lens capsule to provide support and maintain its position within the eye. The zonular fibers are attached to the ciliary body and the lens capsule, enabling the lens to change shape during accommodation. The suspensory ligament plays a vital role in the process of accommodation, allowing the lens to become more rounded to focus on near objects.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the suspensory ligament of the eye is not related to the vitreous humor.
**Option B:** This option is incorrect because the suspensory ligament of the eye does not enclose the aqueous humor.
**Option C:** This option is incorrect because the suspensory ligament of the eye is not related to the choroid.

**Clinical Pearl / High-Yield Fact**
The suspensory ligament of the eye is susceptible to damage in cases of trauma or surgery, which can lead to lens dislocation or other complications.

**Correct Answer:** C. Zonular fibers.