What is the BEST way to combine the information in the two clauses below?

Since the bananas were going bad. Georgia decided to make some banana bread.

Since the bananas were going bad and Georgia decided to make some banana bread.
Since the bananas were going bad, Georgia decided to make some banana bread.
Since the bananas were going bad, then Georgia decided to make some banana bread.
Since the bananas were going bad; Georgia decided to make some banana bread.

Question

What is the BEST way to combine the information in the two clauses below?

Since the bananas were going bad. Georgia decided to make some banana bread.

    Since the bananas were going bad and Georgia decided to make some banana bread.
    Since the bananas were going bad, Georgia decided to make some banana bread.
    Since the bananas were going bad, then Georgia decided to make some banana bread.
    Since the bananas were going bad; Georgia decided to make some banana bread.

xmoses1 · Answer

Since the bananas were going bad, Georgia decided to make some banana bread.

anonymous · Answer

I would add a comma between the two so I am pretty sure it's the second one

anonymous · Answer

Since the bananas were going bad, Georgia decided to make some banana bread.