Final answer:
The teacher's interaction exemplifies active listening, an approach that involves attentive engagement and encourages the student to detail their research efforts.
Step-by-step explanation:
The teacher's strategy in the dialogue above is best described as active listening. By acknowledging the student's frustration and inquiring about the student's research efforts, the teacher practices active listening. Active listening involves paying full attention, understanding, responding, and remembering what is being said. The teacher’s response encourages the student to reflect and discuss the problem areas in their research process, instead of immediately shifting the topic, which could help the student to identify more resources or focus their questions.