Correct Answer: A

Rationale: The word 'cation' refers to a positively charged ion, which is an atom or molecule that has lost one or more electrons. It is not related to nutrients, symptoms, or supplements. Therefore, the closest in meaning to 'cation' among the given choices is 'element.' In the provided extract, it mentions that cations like magnesium can affect the body's ability to absorb other cations, including calcium and potassium. This further emphasizes that 'cation' is related to elements rather than nutrients, symptoms, or supplements.

Correct Answer: C

Rationale: Julie Walker-Mayfield doesn't get off work until 5:30 PM, so she won't be able to register for classes until she gets home. Considering she needs time to unwind after work and settle in, the earliest and most suitable time for her to enter the registration system and select her classes is Tuesday, 5-7 PM. Choice A is incorrect as it falls on Monday, and she gets off work at 5:30 PM. Choices B and D are also incorrect as she needs time to settle in after work before going online to register.

Correct Answer: C

Rationale: The correct answer is C, compromise of the immune system. The passage states that alcohol abuse can weaken the immune system, making individuals more susceptible to infections and illnesses. This compromise of the immune system can lead to various health issues and exacerbate existing conditions. Choices A, B, and D are incorrect based on the passage. While the passage discusses the impact of alcohol abuse on magnesium absorption and kidney function, it does not directly attribute these issues to alcohol abuse. Gastrointestinal disorders are mentioned in relation to magnesium absorption but are not specifically linked to alcohol abuse.

Correct Answer: A

Rationale: Araminta Ross came to be known as Harriet Tubman after marrying a free black man named John Tubman. She took her husband's last name 'Tubman' and changed her first name to 'Harriet,' which was her mother's name. This change of name was a personal choice after her marriage and not because she was named after the plantation owner's wife (B), wanted as an Underground Railroad runner (C), or to remain anonymous as a Civil War spy (D). Therefore, the correct answer is A.

Correct Answer: A

Rationale: If you are among the people for whom a flu vaccine is recommended, the best course of action is to call your doctor for an appointment and get the vaccine. Getting vaccinated can help protect you from getting the flu and reduce the spread of the virus to others. It is important to prioritize your health and take preventive measures, especially during the flu season.