Official Answer Key & Detailed Solution
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Correct Answer: Option (D) — 1, 2 and 3
Concept & Option Breakdown
Standard Reference VerifiedStatement 1 is correct: Wearables such as GPS-enabled smartwatches, fitness bands, and emergency trackers provide real-time geolocation tracking.
Statement 2 is correct: Wearable health trackers monitor sleep cycles, duration, resting heart rate, and blood oxygen saturation using integrated optical photoplethysmography (PPG) sensors and accelerometers.
Statement 3 is correct: Modern hearing aids and advanced wearable audio devices (such as smart earbuds with directional microphones and active noise compensation) assist individuals with hearing impairments by amplifying and tuning sound frequencies.
Applied technology questions in Prelims asking whether modern technologies can accomplish general, everyday tasks are broadly inclusive. All 3 are widely available consumer features.
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