An 11 year old male patient complains that his upper front teeth appear to be sticking out. Intra-oral examination reveals a Class II incisor and molar relation. Fixed orthodontic therapy along with a high pull headgear was initiated. What type of anchorage does this appliance provide?

**Core Concept**
The question tests the understanding of orthodontic anchorage, specifically the type provided by a high pull headgear in the context of Class II malocclusion. Orthodontic anchorage refers to the resistance to the movement of teeth, which can be provided by various appliances and techniques.

**Why the Correct Answer is Right**
A high pull headgear is used to provide **extrernal anchorage**, which resists the forward movement of the upper teeth, particularly the molars, and helps to correct the Class II molar relationship. This type of anchorage is essential in the treatment of Class II malocclusion, where the upper teeth significantly overlap the lower teeth.

**Why Each Wrong Option is Incorrect**
**Option A:** This choice is incorrect because a high pull headgear does not provide **reinforcement** of the anchorage already present.
**Option B:** This choice is incorrect because a high pull headgear is not used to **reduce** anchorage.
**Option C:** This choice is incorrect because **simple anchorage** does not accurately describe the function of a high pull headgear.

**Clinical Pearl / High-Yield Fact**
It's crucial to remember that high pull headgear is used to provide **extrernal anchorage** to the upper molars, helping to correct Class II malocclusion by preventing the upper molars from moving forward.

**Correct Answer:** D. Extrernal anchorage

✓ Correct Answer: D. Reinforced