Your question was What is a sample treated like other experimental groups except no variable is used. The answer is, it's the Control.
Answer:
I think it is B
Explanation:
if you put it in english: Love and other turbulence from Jeremy Leven.
B. Love And Other Turbulence by Jeremy Leven.
C. Love and other turbulence sours by Jeremy Leven.
D. Love and Others turbulence edits by Jeremy leven
I think B
To speak hello in german, say hallo.