Which of these is a complete sentence?

Question

(1 point)
Responses

Although the weather is sometimes warm in early March.
Although the weather is sometimes warm in early March.

Forecasters predicted six more weeks of winter this year.
Forecasters predicted six more weeks of winter this year.

The old saying, “In like a lion, out like a lamb.”
The old saying, “In like a lion, out like a lamb.”

Answer 1

Forecasters predicted six more weeks of winter this year.