Q1. Which of the following is not likely to trigger an asthmatic attack?
A Cigarette smoke
B Dust mites
C Fruits and vegetables Correct
D Air pollution
Explanation
The question asks for what is not likely to trigger an asthmatic attack. Cigarette smoke is a common respiratory irritant and can provoke breathing difficulty. Dust mites are a familiar household trigger for asthma symptoms. Air pollution can worsen or trigger attacks because polluted air irritates the airways. Fruits and vegetables do not fit this trigger pattern; in the passage context, they are connected with antioxidants and a healthier diet rather than with provoking asthma. Hence fruits and vegetables are the item least likely to trigger an attack.