Vocabulary—Antonyms MCQ: Choose the option opposite in meaning to ‘‘STATIONARY’’; distinguish ‘‘not moving’’ from the true antonym indicating movement and mobility (also avoid the stationery/spelling trap).

Given data

• Headword: stationary — motionless; not moving (note: not stationery, which means writing materials).
• Options: Active, Mobile, Rapid, Busy

Concept/Approach
The strict antonym must communicate the ability to move, not merely being occupied or fast.

Option analysis
Mobile: capable of movement; direct opposite of stationary. ✅Active/Busy: imply engagement, not necessarily motion. ❌Rapid: fast speed, not simply the opposite of motionless. ❌

Common pitfalls
Confusing active with motion and mixing up stationary with stationery. The question tests movement, so mobile is best.

Final Answer
Mobile