Answer: I'd say D, "Sugar supplied the energy, the hint of nutrition, the sweet taste to go with the warmth of tea that even the poorest factory worker could look forward to," is your answer.
Explanation: The direct quotes:
"Tea had 'become an economical substitute to the middle and lower classes of society for malt liquor,'"
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<em>"The new drink soon became not only cheap but necessary,"</em>
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<u> "Why did the English, in particular, need a low-cost, filling hot drink? In a word: factories,"</u>
"Factory workers needed cheap food that was easy to transport and that gave them the energy to last until the next break,
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<em>"English workers were offered sugary cookies and candies—what we call today energy bars—that quick pick-me-up that helped workers to make it through their long shifts,"</em>
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<u>"Sugar supplied the energy...Sugar was a necessity,"</u>
all suggest that sugar (and tea) were necessary to stay energized during the long, factory work day in the 1800s in England. So your best option is choice D.
