The main environmental problem caused by the production of Greek yogurt is the creation of acid whey a by -product .
A
with
B
form
C
of
D
as
Correct Answer: as
By product - এর পূর্বে as বসালে বাক্যটি সম্পন্ন হয়। অতএব সম্পূর্ণ বাক্যটি হলো - The main environmental problem caused by the production of Greek yogurt is the creation of acid whey as by - product .