Well, for starters, you need to SELECT the appropriate columns from the two tables.
SELECT A.name, B.answerText
FROM mp_question A INNER JOIN mp_question_answers B
on A.category = B.question
where A.category = 107
But this seems weird to me: Why would you match the value of B.question with the value of A.category???
Maybe you need to show us your schema? All the fields in both tables?