From “Einstein’s Refrigerator” Part A

In paragraph 6, an engineer is quoted as using the phrase howled like a jackal to describe the prototype pump. What is the intended effect of the phrase?

a. to describe the effectiveness of the prototype pump as wild and uncontrollable

b. to explain that the sound of the prototype pump was loud and jarring

c. to explain that the sound of the prototype pump was reliable and soothing

d. to describe the effectiveness of the prototype pump as insufficient and weak