<em>Option b. In "The Man to Send Rain Clouds", Father Paul does not understand the clans people's funeral customs.</em>
Explanation:
In the story, old man Teofilo dies while herding sheep, so his grandsons Leon and Ken are trying to arrange a ceremonial burial for him when they meet Father Paul and invite him to join the ritual. Although the grandsons want to conducts the ceremony in a non traditional christian way, and although Father Paul does not understand this people's funeral customs, he accepts the invitation to be a part of the ceremony.
The paragraph first says what is being compared and contrasted, then it says what they have in common by using the word "both." The phrase "on the other hand" shows that they're being contrasted.