Final answer:
The imagery in lines 5–6 of Millay's poem suggests that love cannot resolve medical issues, and the alliteration in line 7 emphasizes the tragedy of people dying due to a lack of love.
Step-by-step explanation:
The imagery in lines 5–6 of Edna St. Vincent Millay’s poem “Love Is Not All” serves to highlight the limitations of love by juxtaposing it against the essential needs for survival and health, which love cannot fulfill. Specifically, the use of vivid, almost clinical, examples in these lines, such as filling “the thickened lung with breath,” or being able to “clean the blood, nor set the fractured bone,” aligns with answer choice D, indicating that love cannot remedy physical ailments. In regards to the alliteration in line 7, “Yet many a man is making friends with death,” the poetic device emphasizes the severity and loneliness of the human condition in the absence of love. It suggests a personification of death, creating a chilling association and stressing the tragic reality that someone may resign to death due to a lack of love, aligning with answer choice C, the idea that it underscores the widespread issue of people dying because they do not experience love.