Answer:
They were spotless and soundless
Explanation:
The control group is used as a reference to compare the result obtained from the experimental group.
The control group differ from the experimental group in the 2005 peacock butterfly experiment in ways such as the control groups of butterflies having their spots covered with paints. A small part of the peacock’s wings were also removed to prevent them from making sound.
This validates them being spotless and soundless
