Which of the following is a common measurement of radiation dose in humans?

The correct answer is Sievert, which is a unit that measures the biological effect of ionizing radiation in humans. It takes into account not only the absorbed dose of radiation, measured in grays, but also the type of radiation and its effect on different tissues and organs in the body. This makes the Sievert a crucial unit when assessing the potential health risks associated with exposure to radiation, as it provides a more comprehensive understanding of the radiation dose's impact on human health.

In contrast, the gray is another unit of measurement that specifically quantifies the amount of radiation energy absorbed per kilogram of tissue, but it does not account for the biological effects, making it less suitable for human health risk assessment. The curie and becquerel are units of radioactivity. The curie measures the rate of radioactive decay or disintegration of a radioactive substance, while the becquerel is a smaller unit measuring the same phenomenon. Both are useful in characterizing the activity of radioactive materials but do not provide information about the dose received by human tissues. Therefore, the Sievert is the most relevant measurement to assess radiation dose with respect to human health.