Daily cycle — arrange the following in a meaningful working-day order: a) Exhaust (tiredness), b) Night, c) Day, d) Sleep, e) Work.

Introduction / Context:
This problem models a typical human routine. During the day people work; work leads to fatigue; sleep restores energy; and this generally occurs at night. The aim is to create a coherent day-to-night storyline with the tokens provided.

Given Data / Assumptions:

• Tokens: Day (c), Work (e), Exhaust (a), Sleep (d), Night (b).
• Assume a conventional daytime work schedule and nighttime sleep.

Concept / Approach:
We choose the order Day → Work → Exhaust → Sleep → Night. Day signals the working period. Work results in tiredness (exhaustion). To recover, one sleeps. Sleep is associated with nighttime in the assumed routine, so “night” is placed at the end of the chain to emphasize when sleep occurs.

Step-by-Step Solution:
Start: Day (c).Then: Work (e).Then: Exhaust (a) as a consequence.Next: Sleep (d) for recovery.Finally: Night (b) representing the time of sleep.Therefore: c, e, a, d, b.

Verification / Alternative check:
Placing night before sleep would not be wrong in a pure clock sense, but the requested “meaningful order” emphasizes a causal rhythm: work → exhaust → sleep (which we then associate with night).

Why Other Options Are Wrong:

• a, c, e, b, d: Begins with exhaustion without prior work/day.
• c, e, a, b, d: Inserts night before sleep, disrupting the cause–effect readability.
• c, e, b, a, d: Puts night between work and exhaustion.

Common Pitfalls:
Overfitting the exact clock timeline. The exam-style sequence prizes clarity of cause and typical association over strict timestamping.

Final Answer:
c, e, a, d, b