"B" is a complete sentence, but not a compound sentence.
Please check your question to make sure you posted it correctly.
1. Which of these is a compound sentence?
A. Although the weather is sometimes warm in early march.
B. Forecasters predicted six more weeks of winter this year.***
C. The old saying " in like a lion, out like a lamb".
3 answers
I meant complete sentence
Oh, good! Then you're correct!!