Generally speaking, those who opposed the Constitution feared the national government would "<span>Take rights away from the people," since it created a relatively strong federal government over the states. </span>
<span>Montgomery Bus Boycott</span>
With the exception of the last sentence, all sentences are fluidly written and clearly connected between each other. In the case of the last example, the lack of transitional phrases between the two sentences creates a disconnection between the concepts expressed. While we might still be able to understand these sentences, we need to make the transition happen for ourselves as it was not included in the example.
Therefore, your best answer is option D.