Classification – Odd one out (vowel vs consonants): Which letter is different from the others: A, D, F, K?

Introduction / Context:
This is another vowel-consonant discrimination task. Three of the listed letters are consonants; one is a vowel. Identify the vowel to find the odd one out.

Given Data / Assumptions:

• A — vowel.
• D — consonant.
• F — consonant.
• K — consonant.

Concept / Approach:
Use the standard vowel set {A, E, I, O, U}. Only A among the given letters is a vowel; the others are consonants. Hence, A is the outlier.

Step-by-Step Solution:
1) Mark A as vowel; D/F/K as consonants.2) Pick A as the single vowel.

Verification / Alternative check:
Phonetic classification aligns with the orthographic classification; there is no ambiguity.

Why Other Options Are Wrong:
D/F/K share “consonant” status and thus belong together.

Common Pitfalls:
Overcomplicating with alphabet positions; the simplest category works here.

Final Answer:
A