Answer:
e. “…but as the tailor used black thread, all beans since then have a black seam.”
Explanation:
Cause and Effect is a situation or relationship in which occurrence of one event is result of some other event. It is action and reaction situation.
Option A, B, C, and D do not have any cause of events described in these options.
Option E has a cause (the tailor's use of black thread) and an effect/result of this event (all beans have black seam). So only this option uses cause and effect relationship.
Giving basic care and being the closest to a patient
The best way to ensure parallel construction in your essay is to use similar (C) sentence structure throughout the essay.
Parallel structure (parallelism) is when similar sentence structure is used throughout the essay. This is done to ensure coherence.