Which of the following words will take only 's' to form a plural ?

Question

Accepted Answer

Option 2, "radio," is the correct answer because it is a word that forms its plural by simply adding an 's' at the end, resulting in "radios." This is a common rule in English for words that end in a vowel followed by 'o.'

1. **Explanation for Option 2 (radio):**
   - The word "radio" ends with a vowel ('i') followed by the letter 'o.' In English, nouns that end in a vowel followed by 'o' typically form their plurals by adding just 's.' Therefore, "radio" becomes "radios" in its plural form. This follows the standard pluralization rule for such words, making Option 2 the correct choice.

2. **Explanation for why other options are incorrect:**

- **Option 1 (hero):**
     - The word "hero" ends with a consonant followed by 'o.' In English, nouns that end in a consonant followed by 'o' often form their plurals by adding 'es.' Therefore, "hero" becomes "heroes" in its plural form, not "heros."

- **Option 3 (fly):**
     - The word "fly" ends with a consonant followed by 'y.' In English, nouns that end in a consonant followed by 'y' typically form their plurals by changing the 'y' to 'i' and adding 'es.' Therefore, "fly" becomes "flies" in its plural form, not "flys."

- **Option 4 (box):**
     - The word "box" ends with the letter 'x.' In English, nouns that end in 'x' form their plurals by adding 'es.' Therefore, "box" becomes "boxes" in its plural form, not "boxs."

In conclusion, Option 2, "radio," is the correct choice because it follows the rule of adding only 's' to form its plural, unlike the other options which require 'es' or a change in spelling to form their plurals.