Answer:
convey a sense of surprise or disappointment
Step-by-step explanation:
The author's purpose in placing a short sentence immediately after a lengthy sentence in "old man of the sea" is likely to create contrast and emphasize the difference in content between the two sentences. The short sentence "There were no such lines" may be used to convey a sense of surprise or disappointment, and to bring the reader's attention to the lack of something (in this case, lines) that was previously described in more detail in the longer sentence. The change in narrative pace can also serve to hold the reader's attention and add interest to the text.