Question

Choose the synonym of EFFICACY.
a. Delicacy
b. Ruthlessness
c. Efficiency
d. Solemnity

Answer 1

Hint: Synonyms are words having the same or nearly the same meaning as other words. When words or phrases have the same meaning, we say that they are synonymous with each other. Synonyms are used so that we can avoid using the same words repeatedly.

Complete step-by-step answer:

The exact meaning of the word efficacy is having the ability to achieve the intended result, especially a medical treatment to bring about the necessary results, which closely relates, to the word efficiency, which the option [c]. The word efficiency means to accomplish something, without wasting any time and effort. Hence option [c] is the right answer.
The option [a] is wrong because the word delicacy means the state of being dainty, which does not have a similar meaning as efficacy.
Option [b] is wrong because the word ruthlessness means having no pity.
Option [d] is also incorrect because the word solemnity means formal observance of an event.
Options [a], [b], and [d] are not the synonyms of the word efficacy, as they do not have the same meaning or nearly the same meaning. The word efficiency and efficacy are synonymous of each other

Note: You should know the exact meaning of the given word for finding the correct synonym from the options. Do not assume you are good to go, as soon as you find something relatable to the given word, go through all the options thoroughly, as a specific word has multiple synonyms.
For.eg. The synonym for the word efficacy can also be potency along with efficiency.