The type of pronoun is used to show the connection between the antecedent and the subordinate clause of a sentence is a relative pronoun. Relative pronouns are used to link a clause or phrase to a noun or pronoun. Hope this helped!
1. Square Unit
2. Base
3. Formula
4. Perimeter
That's simple
The correct answer for the question that is being presented above is this one: "Looking through the boat's glass bottom, we saw brightly colored fish and even a small shark swim past us." The sentence that has a mismatch between subject and modifier is this "<span>Looking through the boat's glass bottom, we saw brightly colored fish and even a small shark swim past us."</span>