a become more similar to one another b become more different

a) become more similar to one another.
b) become more different than the mean.
c) cluster around the mean.
d) are more accurately represented by the mean.

As the standard deviation gets larger, the scores in the distribution

a) become more similar to one another.
b) become more different than the mean.
c) cluster around the mean.
d) are more accurately represented by the mean.