contestada

Samantha could not find her missing backpack. She halu
been searching for it for hours.
What is the best way to combine these sentences so they include
a DEPENDENT clause?
Select one:
She had been searching for it for hours, and Samantha could not find
her missing backpack.
She had been searching for it for hours and Samantha could not find
her missing backpack.
Even though she had been searching for it for hours, Samantha could
not find her missing backpack.
Even though she had been searching for it for hours Samantha could
not find her missing backpack.