The student's research design is clearly described and explained, as they correctly identify it as independent measures and explain how it was applied in their study. The sampling technique used is also correctly identified as opportunity sampling, and the student explains how it was implemented. However, it would be beneficial for the student to provide a more convincing justification for the choice of sampling method, such as explaining why time efficiency and convenience were important for the study. The relevant characteristics of the research participants, such as their age in relation to the target population and English proficiency, are described. The student also explains that the choice of participants fluent in English was crucial for the proper conduct of the experiment, as it was held entirely in English. The controlled variables and reasons for control, as well as all materials used, are stated, but no further explanation is provided for their choice.