Final answer:
Shared parental leave lengths vary based on country regulations and can be 12, 6, or 9 months. Conditions for eligibility also vary by country.
Step-by-step explanation:
The length of shared parental leave varies based on the country's regulations. In some countries, it may be 12 months, while in others it may be 6 or 9 months. Each country has its own laws and conditions that must be met in order to qualify for shared parental leave. For example, some countries may require that the parent has been employed for a certain period of time, or that both parents agree to share the leave.