Question

Roorkee City plans to replace all diesel buses with electric buses within five years to reduce air pollution. Officials claim this will significantly improve air quality and reduce respiratory illnesses. Which of the following is an assumption made by the officials?

• A. Electric buses are affordable for the city to maintain.
• B. Air pollution in Roorkee City is primarily caused by diesel buses.
• C. Residents will support the transition to electric buses.
• D. Other sources of pollution will also be reduced during this period.

Hint:

For assumption questions, ask “without which statement does the argument fail?” The assumption must be true for the conclusion to hold.

Answer 1

The Correct Option is B

Step 1: Understanding the argument — Officials claim replacing diesel buses will improve air quality.
Step 2: Identifying assumption — This works only if diesel buses are a major source of pollution.
Step 3: Evaluating options — Option (b) is the implicit assumption. Other options are not necessary for the argument to hold.
Step 4: Conclusion — Option (b) is correct.