Question

In a class, Roll No 101 states that the plural of the word CRISIS is CRISES. Roll No 102 states that the plural is CRISISES, and Roll No 103 states that the plural is CRISIS itself. The Roll No of the student who gave the correct answer is[Notez- DO NOT include spaces in your answer)

Answer 1

Correct Answer: 101

Step 1: Identify the base word → The word given is “CRISIS,” which is a singular noun of Greek origin commonly used in English.
Step 2: Recall the pluralization rule → Nouns ending in “-is” of Greek origin typically form their plural by changing “-is” to “-es.” Examples: analysis → analyses, basis → bases, crisis → crises.
Step 3: Compare the answers given by each student:
- Roll No 101: CRISIS → CRISES ✅ (this is the correct plural form).
- Roll No 102: CRISIS → CRISISES ❌ (incorrect, double “s” form does not exist).
- Roll No 103: CRISIS → CRISIS ❌ (unchanged form is wrong because it is not an invariant noun).
Step 4: Conclude correctness → The correct student is Roll No 101, since “CRISES” is the accurate plural of “CRISIS.”
Step 5: Apply formatting rule → The final answer must be provided as a number without spaces.
FinalAnswer:101

Answer 2

An alternative way to confirm this answer is to recall a short list of other Greek-origin "-is" nouns and check that "crisis" follows the same pattern, rather than relying on the rule alone.

Words such as "analysis," "basis," "diagnosis," "thesis," and "crisis" are all of Greek origin, and all of them form their plural by changing the ending "-is" to "-es": analysis becomes analyses, basis becomes bases, diagnosis becomes diagnoses, thesis becomes theses, and crisis becomes crises.

Checking the three claims against this pattern: Roll No 101 says crises, which fits the pattern exactly. Roll No 102 says crisises, which adds an extra "-es" onto an already-changed form and does not match how any of these nouns behave. Roll No 103 says crisis is unchanged in the plural, but "crisis" is not an invariant noun like "sheep" or "series," so leaving it unchanged is incorrect.

Only Roll No 101's answer, crises, matches the established pattern for this class of nouns.

Hence, the correct answer is \[ \boxed{\text{101}} \].