What effect can adopting ergonomics have on work speed?

Correct answer: Work can become smoother as unnecessary movements reduce

The direct answer is option B: work can become smoother when unnecessary movements are reduced. Ergonomics means arranging tools, furniture and tasks so that they suit the worker's body and actions. Reasoning step by step: place frequently used items nearby; arrange them in a useful order; reduce reaching, bending and searching; use less time and effort; therefore the task may be completed more smoothly and quickly. Option B is correct because good arrangement removes wasted movement without claiming that every task becomes faster. Option A is wrong because ergonomics is intended to support work, not always stop it. Option C is unrelated: a suitable workplace should make actions clearer, not make a person lose direction. Option D is wrong because ergonomics concerns safety, comfort and efficiency, not pretending that work is only a display. Memory cue: good layout means less movement, less effort and smoother work.