As a group, living things must be able to do all of the following except
a. remain without change over time.
b. respond to their environment.
c. grow and develop.
d. obtain and use energy.

I believe the answer would be A, remain without change over time. In a group, you always have to respond to the environment, or else nothing will work with the group. Groups have to grow and develop, remaining the same will also not help the input of the group. Groups also need to obtain and use energy, or else they will not thrive. Groups cannot remain without change over time, that would be disastrous because groups need to change in order for different ideas to come, and keep the group thriving for a long time. 

The bags should be yellow i believe