What was Samuel's relationship with Hannah?

Samuel's relationship with Hannah is that he was her son. The biblical narrative in the book of 1 Samuel describes Hannah as a woman who struggled with infertility and earnestly prayed for a child. In response to her heartfelt prayers, God granted her request, and she gave birth to Samuel. To honor her vow to God, she dedicated Samuel to the Lord's service and took him to the temple when he was weaned. This mother-son relationship is pivotal in the biblical account, illustrating themes of faith, dedication, and divine intervention.

The other options do not align with the biblical text: the idea of Samuel being her cousin or her husband does not have any basis in scripture, and while Hannah did eventually interact with priests, Samuel himself held the role of a prophet rather than being defined as her priest. Thus, the relationship of mother and son is the most accurate description in the context of the biblical account.