Free Cause and Effect MCQs with Answers

1. Statement: Cases of vitamin D deficiency have risen in urban schoolchildren. Which is the most likely cause?

• A. An increase in indoor screen time and reduced outdoor play
• B. An increase in the number of schools in the city
• C. A fall in the price of milk
• D. An increase in the school year length

Explanation: Vitamin D is synthesised in skin exposed to sunlight, so less time outdoors is a direct and plausible mechanism for the deficiency. Cause and effect items are answered by asking which option supplies a mechanism, not merely which one happened at the same time. Cheaper milk would, if anything, improve intake rather than reduce it.

2. Which of the following is a result of poor design that could cause an accident in the workplace?

• A. Equipment failure
• B. Slippery surfaces
• C. Insufficient lighting
• D. Unplanned workspace layout

Explanation: Layout is decided at the design stage, so an unplanned arrangement of the workspace is a design fault in a way that the other hazards are not. Equipment failure points to maintenance, slippery surfaces to housekeeping and poor lighting to the working environment. The question is asking which hazard traces back to how the workplace was planned rather than how it is run.

3. Which of the following is the main cause of accidents involving equipment?

• A. Overconfidence
• B. Insufficient maintenance
• C. Fatigue
• D. Poor training

Explanation: Where the accident involves the equipment itself, the usual root cause is that the machine was not serviced, inspected or repaired on schedule, so a fault developed unnoticed. Overconfidence, fatigue and poor training are human factors, and they cause accidents through the operator rather than through the equipment. Matching the cause to what the question specifies is the whole task here.