I would say the main idea is A.
B, C, and D are all mentioned in the passage, but the text as a whole is about how important water level is in the car battery.
Hope this helps.
Answer: Denoting attitudes, activities, or other things that have no religious or spiritual basis'.
Explanation:
D- Louis Horst wasn’t the musical director at denishawn
The correct answer is C. Analyze as it <em>best</em> replaces "carefully look over" in the sentence. Although the other answers are reasonable, it is the minor differences in denotations that make "Analyze" correct. It is not "Formulate" as it means to create something, rather it be an idea or physical object. "Differentiate" tends to mean more of a compare/contrast then the context clues imply here. Finally, "Calculate" generally means to solve something.