4. Which of the following best illustrates a pair of sentences that are joined by an understood relationship?

A. I don't understand a word you said. Have you taken a course in English literature?
B. Luke put three dollars into the office football pool. He was looking forward to vacation.
C. It rained for ten days and ten nights. Grandmother Grady called a company to drill a well.
[D. Detective Smiley scanned the dim hallway. He pulled his pistol from its holster.]

I agree.

To determine which of the following options best illustrates a pair of sentences that are joined by an understood relationship, let's analyze each option:

A. In option A, the two sentences have a clear relationship. The first sentence ("I don't understand a word you said") implies that the speaker is having difficulty understanding something. The second sentence ("Have you taken a course in English literature?") serves as a response or a suggestion for the speaker to improve their understanding of English literature. The relationship between the two sentences is based on the understanding that language comprehension can be enhanced through educational courses.

B. In option B, the two sentences do not possess an apparent understood relationship. The first sentence ("Luke put three dollars into the office football pool") describes an action taken by Luke, whereas the second sentence ("He was looking forward to vacation") provides additional information about Luke's anticipation of vacation. However, there is no explicit connection or relationship between the two sentences.

C. In option C, the two sentences again lack an apparent understood relationship. The first sentence ("It rained for ten days and ten nights") provides information about a prolonged period of rain, while the second sentence ("Grandmother Grady called a company to drill a well") describes a subsequent action taken by Grandmother Grady. The two sentences do not relate to each other in a meaningful or understood manner.

D. In option D, the two sentences illustrate a clear and understood relationship. The first sentence ("Detective Smiley scanned the dim hallway") describes an action performed by Detective Smiley, while the second sentence ("He pulled his pistol from its holster") provides further information about Detective Smiley's actions in response to scanning the dim hallway. The relationship between the two sentences is that the second sentence is a result or consequence of the first sentence, indicating that Detective Smiley pulling his pistol was influenced by scanning the dim hallway.

Based on the analysis above, option D, "Detective Smiley scanned the dim hallway. He pulled his pistol from its holster," is the best example of a pair of sentences that are joined by an understood relationship.