Concept: Some nouns ending in āsā are singular or uncountable, while others are true plural forms. The word ācrisesā is an irregular plural of ācrisis.ā
Explanation: The noun ācrisesā is the plural of ācrisis.ā It follows the Greek pattern of changing ā-isā to ā-es.ā In a sentence, we say āthese crisesā ā the word ātheseā is a plural determiner, confirming that ācrisesā is a plural noun.
Now examine the other options:
- āNewsā is an uncountable noun. It always takes a singular verb (e.g., āthe news is goodā).
- āEconomicsā is the name of a subject. It is singular and takes a singular verb (e.g., āeconomics is interestingā).
- āTennisā is a sport. It is a singular, uncountable noun (e.g., ātennis is funā).
All three end in ā-sā but are not plural. Only ācrisesā has a singular form (ācrisisā) and changes to show more than one.
Therefore, ācrisesā is the only plural noun among the given choices.
Answer: Option D: Crises