**Core Concept**
The palatine tonsils are located in the tonsillar fossa, which is bounded by the anterior and posterior tonsillar pillars. These pillars are formed by specific muscles that play a crucial role in the anatomy of the oropharynx.

**Why the Correct Answer is Right**
The anterior tonsillar pillar is formed by the anterior pillar muscle, which is actually a fibromuscular fold that contains the superior constrictor muscle and the palatoglossus muscle. The posterior tonsillar pillar is formed by the palatopharyngeus muscle, which is a muscle of the soft palate that helps to elevate the pharynx during swallowing. The palatopharyngeus muscle is a key component of the posterior pillar and helps to separate the tonsillar fossa from the rest of the oropharynx.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not directly related to the formation of the tonsillar pillars.
**Option B:** This option is incorrect as the palatoglossus muscle is actually part of the anterior pillar, not the posterior pillar.
**Option C:** This option is incorrect as the styloglossus muscle is located more laterally and does not contribute to the formation of the tonsillar pillars.

**Clinical Pearl / High-Yield Fact**
The anterior and posterior tonsillar pillars are important landmarks in the examination of the oropharynx, and identifying these structures is crucial for the proper examination of the palatine tonsils.

**Correct Answer: B. Palatoglossus and Palatopharyngeus muscles.**