Yes, I am confident in my selection. The questions selected—"How have electronic devices changed the way people communicate?" and "How does screen time impact people’s physical and mental health over time?"—are both suitable for formal inquiry because they invite deeper exploration and analysis.
To clarify:
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How have electronic devices changed the way people communicate? This question opens up a discussion on the evolution of communication methods due to technology, encouraging research and analysis.
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How does screen time impact people’s physical and mental health over time? This question requires investigation into the effects of screen time, providing a basis for inquiry into health impacts.
The other options are more subjective or personal and do not lend themselves to formal inquiry.