HESI A2 Reading Comprehension V1 2024

Correct Answer: C

Rationale: The correct answer is C because it accurately summarizes the key points of the passage about the ECG. It mentions that the ECG measures the stages of the 'wave of excitation' within the heart and its three distinct steps. It also describes how this wave spreads from the SA node to the AV node. Choice A is incorrect because it focuses on electrostatic charges set off by the heart, which is not the main focus of the passage. Choice B is incorrect because it talks about unique electric currents on the surface of the body, which is not the main purpose of the ECG as mentioned in the passage. Choice D is incorrect because it only mentions that the ECG measures electric currents within the body without providing the specifics of the wave of excitation and its stages as described in the passage.

Correct Answer: A

Rationale: The correct answer is A: To consist of. In the context of the first paragraph, 'composed' refers to the elements or parts making up something. The word implies that something is made up of different components. This is evident as the paragraph discusses how the team is composed of individuals with diverse skills and backgrounds. Explanation of why other choices are incorrect: B: To be uniquely discovered - This does not fit the context of the paragraph which is describing the makeup of a team. C: To be set apart - This does not align with the meaning of 'composed' in the context of being made up of different parts. D: To be surprised - This has no relevance to the meaning of 'composed' in the paragraph.

Correct Answer: A

Rationale: The correct answer is A because sound pitch is determined by the frequency of sound waves. When waves are closer together, they have a higher frequency, resulting in a higher pitch. In contrast, when waves are farther apart, the frequency is lower, leading to a lower pitch. Choices B, C, and D are incorrect as they do not directly relate to the frequency of sound waves, which is the key factor affecting pitch.

Correct Answer: D

Rationale: The correct answer is D because the author's primary purpose is to inform the reader about the stages of the water cycle. This can be inferred from the content of the essay, which likely discusses topics such as evaporation, condensation, precipitation, and collection. The other choices are incorrect because they do not align with the main focus of the essay. Choice A focuses on persuading readers to conserve water, which may be a related topic but not the main purpose of the essay. Choice B is about persuading readers against runoff, which is not the central theme. Choice C discusses analyzing different types of runoff, which is also not the primary purpose of the essay.

Correct Answer: A

Rationale: The correct answer is A: foodborne illnesses. The subject of the passage is foodborne illnesses, as it is the main focus and discussed in detail. The passage may mention other aspects like dangers of uncooked food, bacteria, and proper food preparation, but these are supporting details rather than the main subject. Foodborne illnesses encompass these topics but go beyond them to cover the broader issue of illnesses caused by contaminated food.