Explanation:

- Here’s the thing: The sentence is “We didn’t buy the dining table because ............ was too expensive.”

- Let’s look at your options:

- Option 1: it’s – That’s short for “it is” or “it has.” Swapping it in: “because it is was too expensive” doesn’t work. Two verbs back to back? Grammar police would object.

- Option 2: it – This is the pronoun you need. “because it was too expensive” is smooth and fits perfectly.

- Option 3: its – “Its” is the possessive form of “it,” as in “its color.” This would only work if the sentence were about something the table owned: “its price,” for example. Not the case here.

- Option 4: lts’ – Not a real word. We all make typos, but this isn’t even a contender.

- What this really means: Option 2 “it” is absolutely the right call here. It’s the right pronoun, and the sentence works without any hiccups.