Answer:
Fourth Option <em>“A perfect taste made possible by the most brutal labor.”</em>
Explanation:
Author's main purpose of this excerpt is about difficulties, problems and labor involved with the production of sugar. He also points out that sugar is sweeter than honey. Both these purposes are fulfilled in this quotation i.e. <em>“A perfect taste made possible by the most brutal labor.”</em> A perfect taste for sweeter taste of sugar, and the most brutal labor for difficulties and labor put in for the production of sugar.
First, second and third options are not correct because they support only one part of the author's main purpose i.e. either difficulty or taste.
I think the answer may be water pollution.
water pollution > Water pollution<span> is the contamination of </span>water<span> bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). This form of environmental degradation occurs when </span>pollutants<span> are directly or indirectly discharged into </span>water<span> bodies without adequate treatment to remove harmful compounds.
source: Wikipedia </span>
Iambic pentameter is a metric parameter that defines rhythm and the emphasis of syllables in a line of a poem. Iambic is a beat with a combination of one unstressed syllable with one stressed syllable. While pentameter is a rhythm composition of five metrics. So Iambic pentameter has a line of five non-stressed-stressed syllables.
Shakespeare’s “Sonnet 100” has fourteen-line in Iambic pentameter which the emphasis contributes to highlight the important words and the rhythm intensifies the emotional impact, which are in these two options:
The stresses highlight important words and concepts.
The regular rhythm intensifies the emotional impact.
