Which number contains a sentence error?

1.mike enjoyed learning spanish, so he signed up to teach the language to police officers.
2.mike enjoyed learning spanish; he signed up to teach the language to police officers.
3.mike enjoyed learning spanish, he signed up to teach the language to police officers.
4.mike enjoyed learning spanish. he signed up to teach the language to police officers.

What are the first steps to take when organizing a literary analysis? select three options. - write drafts of articles that present similar interpretations of the literature -think about and then interpret a quotation from literature -conduct a survey of classmates' opinions on the interpretation -offer supporting evidence for your viewpoint of the interpretation -formulate your viewpoint on the interpretation of literature