Answer: d. As a result, I knew how to answer those types of questions on the next test.
Explanation: When writing, it is important to use words or phrases to help us connect the ideas, sentences and paragraphs, in this way we can make the text flow better, to do that we use transition words or transition phrases. Some examples of transition words are "and," "but," "later," "before," "also," etc. In the given sentences, the first three have examples of transition words ("but", "and", and "although" respectively), but the one that contains a transition phrase is option D "as a result", this is a transition phrase that indicates cause/effect.
