Final answer:
Maternity protection laws vary by country, but they commonly prohibit employers from employing an employee within a certain period before her expected childbirth, often around 6 weeks, though this can differ widely.
Step-by-step explanation:
According to maternity protection laws which may vary by country, an employer cannot employ an employee within a certain period before her confinement. In some jurisdictions, this period is typically around the range of 6 weeks (approx. 42 days) before the expected date of childbirth.
However, these regulations can differ widely, so it's crucial to consult the specific laws applicable in the employee's country or state.
For instance, options a) 30 days, b) 45 days, c) 60 days, and d) 90 days are all possible answers depending on the legal requirements of the region in question.