The correct option is E E
The sentence structure should be Subject+ verb+ predicate. The subject is "If someone ", the noun phrase, the verb "has", and the predicate is, "finished the work". The subordinate clause also follows the same rule, subject(he)+ verb(may go)+ home(Predicate). Therefore, the given sentence structure is correct, that is, no error. Hence, Option E is correct. The rest of the options do not adhere to this rule, hence, incorrect.