**Core Concept**
Keisselbach's plexus is a vascular network located on the anterior part of the nasal septum, known as Little's area. It is a common source of anterior epistaxis, accounting for approximately 90% of cases. The anatomy of this region makes it prone to trauma and bleeding.

**Why the Correct Answer is Right**
Balloon tamponade is a more effective and less invasive method of controlling severe epistaxis compared to anterior nasal packing. The balloon tamponade involves inserting a balloon catheter into the nasal cavity and inflating it to apply pressure on the bleeding site. This method is less traumatic and has fewer complications than anterior nasal packing, which can cause nasal cartilage damage and other complications. The correct answer is incorrect because balloon tamponade is actually easier to insert and less traumatic than anterior nasal packing.

**Why Each Wrong Option is Incorrect**
**Option A:** Keisselbach's plexus is indeed the source of epistaxis in approximately 90% of cases, making this statement true.

**Option B:** It is true that antibiotic coverage is given if anterior packing is left in the nose for more than 48 hours to prevent infection. This statement is correct.

**Option D:** Trotter's method, also known as the "Trotter's nasal tampon," is a first-aid technique used to control epistaxis. It involves inserting a small strip of gauze or cotton into the nostril to apply pressure on the bleeding site. This statement is true.

**Clinical Pearl / High-Yield Fact**
A key point to remember when managing epistaxis is to identify and control the source of bleeding early to prevent complications. In cases of anterior epistaxis, balloon tamponade is often the preferred method of treatment due to its effectiveness and lower risk of complications.

**✓ Correct Answer: C. Anterior nasal pack is easy to inse and less traumatic than balloon temponade**