Answer:
O He receives a letter from the children. (Not exactly the children but the children's father Nnaemeka)
Step-by-step explanation:
Chinua Achebe's short story "Marriage is a Private Affair" revolves around an Ibo man and his father's disagreement over a marriage. The story deals with themes of tradition, love, family, etc.
When Nnaemeka revealed he wanted to marry a woman he loves and not the one chosen by his father, Okeke, his father was adamant and broke all relations with him. Even after their wedding, he refused to accept his daughter-in-law and would remain so if not for the letter his son wrote to him. In his letter, Nnaemeka mentioned "from the day they learned that they have a grandfather, have insisted on being taken to him. I find it impossible to tell them that you will not see them."
It was through this letter that Okeke learned of his two grandsons.