In which of the sentences below is the semicolon used correctly to join two independent clauses?

Question

a. Sammy fell into a deep sleep; he woke feeling refreshed and renewed.
b. After Sammy fell into a deep sleep; he woke feeling refreshed and renewed.
c. Sammy fell into a deep sleep; and he woke feeling refreshed and renewed.

Answer 1

a. Sammy fell into a deep sleep; he woke feeling refreshed and renewed.