Which of the following accurately represents one tablespoon in teaspoons?

One tablespoon is commonly accepted as being equivalent to three teaspoons. This understanding is based on standard culinary measurements, where conversions are crucial for accurate recipes and proper dosing in contexts that involve medication or nutrition.

A tablespoon is often used for larger quantities, while teaspoons are for smaller amounts, and knowing this conversion ensures one can measure ingredients or medications correctly. This conversion is especially important in both home cooking and healthcare settings where precise measurements can affect outcomes. In this context, the answer confirming that one tablespoon equals three teaspoons accurately reflects standard practices in measurement.

The other choices do not align with this common conversion and would lead to inaccuracies in measurement, impacting both cooking and medication administration.