**Core Concept**
The question is testing the knowledge of different types of sutures and knots used in surgical procedures. This includes understanding the characteristics, applications, and purposes of various suturing techniques.

**Why the Correct Answer is Right**
The Granny (Pseudo-square) Knot is a type of knot that is commonly used in surgical procedures, particularly for suturing skin and other soft tissues. It is also known as the "Granny knot" or "Pseudo-square knot." This knot is secure, easy to tie, and resistant to slipping, making it a popular choice among surgeons. The Granny Knot is particularly useful when working with absorbable sutures, as it minimizes the risk of suture breakage.

**Why Each Wrong Option is Incorrect**
* **Option A:** The Square (Reef) Knot is a type of knot that is commonly used for securing ropes and lines, but it is not typically used for suturing in surgical procedures. While it can be used for suturing, it is not as secure as the Granny Knot.
* **Option B:** The Surgeons Knot is a type of knot that is commonly used for tying sutures, but it is not as secure as the Granny Knot and can be prone to slipping.
* **Option C:** The Granny (Pseudo-square) Knot is the correct answer, as explained above.
* **Option D:** The Reverse cutting needle is a type of needle used for suturing, but it is not a type of knot.
* **Option E:** The Vertical Mattress Suture is a type of suture used for closing wounds, but it is not a type of knot.
* **Option F:** The Purse String Suture is a type of suture used for closing wounds, particularly in plastic surgery, but it is not a type of knot.

**Clinical Pearl / High-Yield Fact**
When suturing, it's essential to choose the right type of knot for the specific procedure, taking into account the type of suture, the tissue being closed, and the desired level of security. The Granny Knot is a reliable choice for many surgical procedures, but it's crucial to master various types of knots to become proficient in suturing.

**Correct Answer:** C. Granny (Pseudo-square) Knot