Read the following statement: "Only people seeking rest and relaxation should buy a boat." Which statement expresses the same idea?

A. Conduct a survey of those who drink orange juice to prevent a cold: While a survey might provide some data on people's behaviors, it wouldn't establish a cause-and-effect relationship between drinking orange juice and preventing the common cold. Surveys can show trends, but they can't confirm scientific conclusions without controlled experimental data.

B. Review the chemical composition of orange juice: Understanding the composition of orange juice (such as its vitamin C content) is important, but it doesn't directly address whether it prevents colds. The researcher needs to look at studies that investigate the outcome of drinking orange juice, not just its ingredients.

C. Drink orange juice when a cold is coming on: This is more of a personal action than a scientific approach. The researcher would need to gather evidence from controlled studies rather than relying on personal experience or anecdotal evidence.

D. Analyze the research data found in the scientific journals: This is the best method. Reviewing existing scientific studies allows the researcher to see what previous research has found about the relationship between orange juice and cold prevention. Published studies typically include controlled experiments, systematic reviews, and meta-analyses that provide reliable evidence and conclusions.

A. the horses in the study were racehorses and the findings do not apply to horses in general: The study specifically involved racehorses, so this statement is true, but it doesn’t directly address the core finding of the study, which is the relationship between iron-rich diet and increased track speed.

B. iron rich feed is associated with an increased track speed in racehorses: The study shows that 75% of the horses showed improved track speed after receiving an iron-rich diet, indicating an association between the two variables.

C. regulations regarding the type of dietary intake for racehorses should be enforced: The study doesn’t suggest that regulations are necessary; it only shows an association. The study does not provide enough information to make regulatory recommendations.

D. regular, non-iron enriched feed causes decreased track speed in racehorses: The study does not discuss non-iron-enriched feed or make any claims about its effect on racehorse speed. The study only examined the effects of an iron-rich diet, not the comparison with other types of feed.