Choose the option which means the opposite of the given word:
Noisome
A) Clean
B) Fragrant
C) Sleepy
D) Dirty

Hint: Antonyms are the words that are opposite in meaning to another. The root words for the word 'antonym' are the words 'anti' meaning 'against' or 'opposite' and 'onym' meaning 'name’. For instance: the antonym of ‘hot’ is ‘cold’.

Complete step by step answer:
The meaning of the word noisome is ‘having an extremely offensive smell or unpleasant smell’. So, as per the question we have to find the word which is opposite in meaning to the word noisome.
Option A) Clean - is an incorrect answer because the meaning of clean is ‘free from dirt, marks, or stains’ and this is not antonym of the word noisome. Thus, this is an incorrect answer.
Option B) Fragrant - is the correct answer because the meaning of fragrant is ‘having a pleasant or sweet smell.’ and this is the antonym of the word noisome as they have different meanings or they are opposite in meaning to each other. Thus, this is the correct answer
Option C) Sleepy - is an incorrect answer because the meaning of sleepy is ‘tired or drowsy’ and this is not antonym of the word noisome. Thus, this is an incorrect answer.
Option D) Dirty- is an incorrect answer because the meaning of dirty is ‘filthy or stained’ and this is not antonym of the word noisome. Thus, this is an incorrect answer.

So, the correct answer is “Option B”.

Note:
Antonyms are the words that are opposite to each other i.e. the antonym of Noisome is fragrant and synonyms are the words that are similar in meaning. So, the synonym of the word noisome is stinking or bad smelling. Thus, Option B is the most appropriate answer as compared to the other options. However, in this question Option A and D are also antonyms of each other because they have opposite meanings i.e. clean – dirty.