Correct Answer: B

Rationale: The speaker's address of 'My Good Friends' implies a sense of warmth and familiarity, indicating that the speaker wants to establish a connection with the audience before delivering a serious speech. This type of salutation is often used by entertainers to engage the audience and create a friendly atmosphere conducive to effective communication. Choice A is incorrect because there is no indication of an employer-employee relationship. Choice C is incorrect as there is no indication of irony in the salutation. Choice D is incorrect as the salutation aims to create a connection rather than grab attention as a politician might.

Correct Answer: D

Rationale: The correct answer is D. It can be inferred from the passage that historians have difficulty definitively pinpointing Viking historical events. The passage highlights the uncertainty around Leif Erikson's birth year, conflicting accounts of interactions with natives, and the lack of clarity regarding specific events in Viking history. Choices A, B, and C are incorrect. There is no indication in the passage that the Vikings disliked exploring the New World; Leif Erikson's banishment did not directly lead to his exploration of Canada but rather his desire to spread Christianity and find new lands; and there is no mention of Leif Erikson not sharing his stories with the King of Norway.

Correct Answer: B

Rationale: Samuel's sample size of 24 students is too small to draw generalizable conclusions about a larger population. While his observations are based on firsthand experience, the sample size is inadequate to make meaningful claims about the relationship between parental involvement and academic success for all students. Choice A is incorrect because bias is not related to sample size but rather the way data is collected. Choice C is incorrect as having too many members would not hinder understanding specifics, but rather provide a more comprehensive view. Choice D is incorrect as the sample size is too small to be considered appropriately sized for making broad claims.

Correct Answer: C

Rationale: The main idea of the second paragraph is that confirming and disconfirming evidence can affect hypotheses differently, as stated in the passage - 'Single pieces of evidence then, seem to affect a given hypothesis in radically different ways.' Choice A is incorrect because the paragraph discusses how single pieces of evidence affect hypotheses, not that one hairy monkey proves a hypothesis. Choice B is incorrect as the paragraph focuses on the different effects of evidence on hypotheses, rather than its ability to confirm and disconfirm simultaneously. Choice D is incorrect as the paragraph does not primarily discuss the scientific method's failings but rather the impact of evidence on hypotheses.

Correct Answer: D

Rationale: The speaker's final comment implies that if the person is indeed Mr. Hyde, then the speaker would assume the role of Mr. Seek, indicating a determination to continue searching for Hyde. This suggests that the speaker intends to persist in their search for Hyde rather than giving up or changing direction. Choices A, B, and C are incorrect because there is no indication in the passage that the speaker is considering a name change, experiencing an identity crisis, or mistakenly looking for the wrong person. The focus is on the speaker's resolve to find Mr. Hyde.