Final answer:
Blood pressure data is likely to be normally distributed because it tends to fall into a bell-shaped curve around a 'typical' range with fewer extreme values.
Step-by-step explanation:
The question asks which of the given data sets could most likely be normally distributed. The answer is c. Blood pressure. Normally distributed data tend to be symmetric around the mean and have a bell-shaped distribution. Blood pressure readings of a large population, when recorded and plotted, can form a normally distributed curve since most people have blood pressure values around a 'typical' range, with fewer individuals having extremely high or low values.
Considering the conditions for a normal distribution, and referring to the fact that a normal distribution is an excellent approximation when the sample size is greater than 30, blood pressure data of a large population fits well with these conditions.