In the following English spelling question, four alternative spellings of the same word are given. Select the correctly spelt word.

Introduction / Context:
This question checks spelling accuracy in English. Competitive exams frequently present several similar-looking words and ask candidates to identify the correct spelling. Here the focus is on the word that means morally corrupted or distorted in behaviour, which is commonly spelled in a particular standard way in English.

Given Data / Assumptions:
- Four similar spellings of a single word are provided. - Only one option follows the standard, widely accepted English spelling. - The meaning of the word is known, but the question mainly targets spelling skills. - Standard modern British or international English conventions apply.

Concept / Approach:
Spelling questions are best solved by relying on familiarity with common patterns in English words and, when possible, by recalling how the word appears in reading. The word in question is “perverted”, which is derived from the verb “pervert” and uses the common past participle ending “-ed”. English words of Latin origin that begin with “per-” usually keep that prefix unchanged, and the consonant cluster “rv” in the middle of the word is also standard. Any unusual vowels or rearranged letters in other options signal incorrect spellings.

Step-by-Step Solution:
Step 1: Recognise that the intended word is the adjective formed from “pervert”. The correct base is “pervert”. Step 2: Apply the normal rule of adding “-ed” to the verb to form the past participle and related adjective, which gives “perverted”. Step 3: Examine option “Perverted”. It matches the expected pattern: “per-” prefix, “vert” root, and the ending “-ed”. Step 4: Check “Pervirted”. The presence of “ir” instead of “er” after “v” breaks the known root “vert”, making it incorrect. Step 5: Check “Parverted”. Here, the prefix “par-” replaces “per-”, which does not correspond to any standard form of the word. Step 6: Check “Parvirted”. This mixes both the incorrect prefix “par-” and the incorrect vowel sequence “ir”, so it is doubly wrong. Step 7: Check “Pervertid”. The ending “-id” is incorrect for the past participle; the regular ending is “-ed”.

Verification / Alternative check:
A simple verification method is to recall actual usage from reading or reliable dictionaries. One frequently encounters phrases like “perverted mind”, “perverted sense of humour”, or “perverted justice”. In all such uses, the spelling is “perverted”. None of the other spellings appear in standard English texts. Online dictionary entries and textbooks always give “perverted” as the standard spelling, confirming the choice.

Why Other Options Are Wrong:
Pervirted: The sequence “virt” does not match the root “vert” that appears in words like “convert”, “divert”, and “pervert”. Parverted: The initial syllable “par” is incorrect. The established prefix is “per”, meaning through or thoroughly. Parvirted: This form combines both the wrong prefix and wrong internal vowel sequence, so it is far from the accepted spelling. Pervertid: The “-id” ending does not correspond to the regular English past participle pattern; “-ed” is required.

Common Pitfalls:
Learners sometimes mix up “er” and “ir” in the middle of words or change the vowel in an unfamiliar word to what seems natural in their own pronunciation. Another frequent pitfall is confusion about suffixes such as “-ed”, “-id”, or “-ted”. To avoid these mistakes, candidates should build a habit of reading carefully and mentally noting the spelling of common exam words. Keeping personal vocabulary lists with accurate spellings is also very useful for revision.

Final Answer:
The correctly spelt word among the options is Perverted.