Explanation:

Let’s break down each option:

- Option 1: Gramar

This is missing one “m.” That’s not how you spell it.

- Option 2: Gramer

This one also uses just one “m.” Still not right.

- Option 3: Grammar

Here’s the thing—this is the correct spelling. Two “m”s, two “a”s. This is the word you want when you’re talking about language rules.

- Option 4: Grrammer

There’s an extra “r” popping in here, which isn’t correct.

Your answer is Option 3—Grammar.