Read the following context and choose the best option to answer the question.
Context: I said no , no , we 're fine , you 'll get there , just late , Who is picking you up ? Let 's call him and tell him . We called her son and I spoke with him in English . I told him I would stay with his mother till we got on the plane andWould ride next to her -- southwest . She talked to him .
Question: Why is the narrator calling the son ?
Options: 
- To tell him his mother would n't be coming home .
 - To ease the mom 's anxiety .
 - None of the above choices .
 - To tell him his mother had passed .


To ease the mom 's anxiety .