1. B. It delivers an in-depth understanding of the problem or study.→ This is more of a qualitative research characteristic. Quantitative research focuses on numbers and measurable data, not deep personal insights.2. C. The control group→ In experiments, the control group does not receive the treatment. It is used for comparison with the treatment/experimental group.3. A. What is the most popular social media platform used by Senior High School students?→ This can be measured using surveys and numbers (counting frequency or percentages). The others are more qualitative because they ask about effects or factors.4. A. The responses of the participants are limited to what has been asked and the choices given.→ Quantitative research often uses surveys with fixed questions, limiting deeper explanations.5. B. Less expensive→ Quantitative research usually requires surveys, data collection, and statistical tools, which can be costly. The other options (A, C, D) are true strengths.