The correct sentence is: Billy is my best friend; he's a goat.
The semicolon is appropriate here because it connects two closely related independent clauses. The first two options are either missing punctuation or improperly punctuated.
5 points
Billy is my best friend he's a goat.
Billy is my best friend, he's a goat.
Billy is my best friend; he's a goat.
None of these are correct
1 answer
The correct sentence is: Billy is my best friend; he's a goat.
The semicolon is appropriate here because it connects two closely related independent clauses. The first two options are either missing punctuation or improperly punctuated.