Read the sentence.

Eliana Rodriguez who teaches biology is my favorite teacher because she gives engaging lectures.

Which is the best way to revise this sentence?
Eliana Rodriguez, who teaches biology is my favorite teacher because she gives engaging lectures.
Eliana Rodriguez, who teaches biology, is my favorite teacher because she gives engaging lectures.
Eliana Rodriguez who teaches biology is my favorite teacher because, she gives engaging lectures.
Eliana Rodriguez who teaches biology, is my favorite teacher, because, she gives engaging lectures.