Questions: Which of these is the BEST science question using the criteria we just learned? Does consuming food with higher salt content lead to poorer health outcomes in the form of high blood pressure? Which food has the lowest salt content? Which food is the healthiest? Is food with lower salt content healthier?

The answer is the first one: Does consuming food with higher salt content lead to poorer health outcomes in the form of high blood pressure?

Explanation for each option:

1. Does consuming food with higher salt content lead to poorer health outcomes in the form of high blood pressure?

   • This question is the best because it is specific, measurable, and testable. It clearly defines the variables (salt content and health outcomes like high blood pressure) and implies a causal relationship that can be investigated through scientific research.

2. Which food has the lowest salt content?

   • While this question is specific and measurable, it is more of a factual inquiry rather than a scientific question that explores relationships or causes. It does not lead to an investigation of broader scientific principles or health outcomes.

3. Which food is the healthiest?

   • This question is too vague and subjective, as "healthiest" can vary based on different criteria (e.g., nutrient content, calorie count, etc.). It lacks specificity and is not easily measurable without further definition.

4. Is food with lower salt content healthier?

   • This question is somewhat similar to the first one but is less specific. It does not specify what "healthier" means or how it will be measured, making it less precise than the first option.

In summary, the first question is the best because it is well-defined, specific, and allows for scientific investigation into the relationship between salt intake and health outcomes.