Question

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Explanation:

1. For the option "The stresses highlight important words and concepts": In iambic pentameter, the pattern of stressed and unstressed syllables (stresses) is used by Shakespeare to draw attention to key words/concepts that carry the meaning of the sonnet.
2. For the option "The regular rhythm intensifies the emotional impact": Iambic pentameter has a regular rhythm (five iambs per line), and this regularity can enhance the emotional resonance of the poem's themes, like the themes of love or time in "Sonnet 100".
3. The other options are incorrect: "The stressed syllables impart an impression of anger" - iambic pentameter's stress pattern in "Sonnet 100" isn't about anger. "The irregular rhythm emphasizes unpleasant meanings" - iambic pentameter is regular, not irregular here. "The singsong cadence adds to the sarcasm in the words" - "Sonnet 100" doesn't have a singsong cadence for sarcasm; it's more about sincere emotional expression.

Answer:

A. The stresses highlight important words and concepts.
D. The regular rhythm intensifies the emotional impact.