Answer:
B. Contact the employer by phone, fax, or email
Explanation:
Josefina submitted a complaint online that is non-serious in nature. The OSHA most likely respond by contacting the employer by phone, fax, or email.
Because the complaint is of informal or non serious nature, the other option does not sit well with the situation. To satisfy Josefina, they would just make a call or send and email or fax so she is satisfied and feels that her complaint is being looked at.
