Which of the following is NOT one of the listening section requirements for the TOEFL?

The requirement that a minimum score of 20 is a specific benchmark used in the TOEFL testing framework for the listening section, which reflects a typical expectation for students to demonstrate adequate listening comprehension. In contrast, the other options are scores that do fall into permissible minimum thresholds set by various institutions or specific programs. The range for the listening section minimum scores typically includes values like 18, 22, and 26, which reflect varying standards for different educational contexts or program requirements.

By recognizing the scoring system and its benchmarks, students can better understand how their performance on the test impacts their academic opportunities. Institutions may designate these varying score requirements based on the difficulty of courses and the level of comprehension they expect from non-native English speakers. Hence, option B, with a minimum score of 20, does not align with the standard requirements and is correctly identified as the outlier in this context.