Which of the following components deficiency in the ligament will roost likely limit healing of this injury?

The correct answer to this question is option A
A deficiency in blood vessel around the affected ligament will further slowdown the healing process.
Cartilages and ligaments are known to have low blood supply compared to the blood supply to the bones. This means there is poor blood flow, poor supply of nutrients and oxygen to the cartilage and ligaments.

If the little that is available becomes unavailable, the ligaments has a further decrease the amount of blood flow, nutrient and oxygen supply, which will in turn slow down the healing process of the torn ligament.
Hope this helps.