The answer is B. Put it least to greatest = 0.6, 0.87, 0.87, 1.1, 1.23, 2. Then you take the two middle number, 1.1 and 0.87, and add them. You get 1.97. Then you divide 1.97 by 2. Which equals 0.985
The empirical rule says that approximately 68% of any normal distributed data set lies within one standard deviation of the mean.
The same rule states that about 95% lies within two standard deviations of the mean. Using this rule, and the fact that any normal distribution is symmetric about its mean, you have