Concept:
The Renaissance was a period of revival of art, literature, science, and humanistic thought in Europe. Renaissance artists studied nature, human emotions, anatomy, perspective, and realistic representation.
Step 1: Check statement A.
Humanism was a central feature of Renaissance art.
So, statement A is correct.
Step 2: Check statement B.
Renaissance art often expressed moral, religious, and human values.
So, statement B is correct.
Step 3: Check statement C.
Statement C says that anatomical structure of the human body was not expressed.
This is incorrect because Renaissance artists carefully studied and expressed human anatomy.
So, statement C is incorrect.
Step 4: Check statements D and E.
Artists worked in workshops and artistic groups, and they also closely observed nature and man.
So, statements D and E are correct.
Thus, the correct statements are:
\[
A,\ B,\ D,\ E
\]
Hence, the correct answer is:
\[
\boxed{\text{(C) A, B, D and E only}}
\]