Step 1: Medical definition.
An allergy is the body's violent reaction to substances which are usually harmless, such as dust or pollen.
Step 2: Checking options.
(A) fast: Not exact.
(B) mild: Opposite.
(C) violent: Correct.
(D) quick: Too vague.
Step 3: Conclusion.
Correct answer is (C) violent.
“One of these days you’re going to talk yourself into a load of trouble,” her father said aggressively. What do you learn about Sophie’s father from these lines? (Going Places)