The topic sentence is the starting sentence and what you’re talking about
The SI base unit of length
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>
Did you ever get the answer? If you did could you please tell me
................................................................................................................................................................................................oh and the answer is a:)