Plural of CAT.

**The reasoning** In English, we form the plural of most nouns by simply adding **-s** to the end. CAT becomes **CATS**. This is the standard pluralization rule you'll use for the majority of words: book → books, pen → pens, desk → desks. No extra letters, no complications—just add that -s and you're done. **Why the wrong options tempt you** - **Cates** tricks you into thinking you need to add "-es" like "boxes" or "churches," but CAT doesn't end in s, x, ch, or sh, so this rule doesn't apply. - **Catses** is what happens when you overthink it—adding both -s AND -es. This never happens in English! - **Cat** stays singular. Some students freeze and pick the original word, forgetting the question asks for plural. **Quick takeaway** For simple nouns like CAT, GOAT, or PEN—just add **-s** for plural, nothing fancy needed. Save "-es" for words ending in s, x, z, ch, or sh (like buses, boxes, churches).