Teacher : school :: priest : church
I say that because ina school a teacher does his / her work just like a priest will do his work in the church .
Father : son :: mother : daughter
I say that because if father and a son are both males then only mother and a daughter can be two females ( one being the descendant of other ) .
Therefore ,
1 . teacher : school :: priest : ?
(a) church
Teacher : school :: priest : church
2. Father : son :: mother : ?
(c) Daughter
Father : son :: mother : daughter