Final answer:
The woman least likely to obtain a legal divorce after separation is the one who has been married for less than a year due to minimum duration requirements for filing a divorce in many jurisdictions.
Step-by-step explanation:
Among the options provided, the woman who is least likely to obtain a legal divorce after separation is the one who has been married for less than a year. In many jurisdictions, there are minimum duration requirements before a divorce can be filed, often beyond a year. This early in the marriage, it may be difficult to demonstrate irreconcilable differences or other grounds for divorce.
The woman with evidence of domestic violence is likely to be granted a divorce due to the nature of the abuse. The woman with a prenuptial agreement might have a streamlined divorce process if the agreement outlines provisions for divorce. Lastly, having children with a spouse does not commonly impede the ability to divorce; rather, it may complicate the divorce due to custody considerations, but it does not prevent it.