Hi. You did not enter the text to which this question refers, which makes it impossible for it to be answered. However, I will try to help you as best I can.
A cause and effect structure is the one used in a text that shows how an element is capable of causing the existence of another element, that is, it shows what was the cause of any effect. To answer your question, you need to read the text it is related to and identify when this kind of structure is established. This moment must present the false sense of isolation as a cause or an effect, so that you can interpret it and answer your question.
The correct answer is that this group of words is a sentence. It is a complete sentence, regardless of its shortness and lack of subject. It is an imperative sentence, not a fragment.
Explanation:
<em>Other distinguishing characteristics of the slave narrative are its simple, forthright style; vivid characters; and striking dramatic incidents, particularly graphic violence and daring escapes, such as that by Henry "Box" Brown, who packed himself into a small crate and was shipped north to waiting abolitionists.</em>
<em>can </em><em>we </em><em>mastûrbate</em><em> together</em>
it offends me to the soul to hear a robustious periwig-pated fellow tear a passion to tatters