Explanation:

The correct preposition to use in the given sentence is "in". This is because the preposition "in" is used to show interest or involvement in a particular activity or subject. In this case, the sentence is expressing the desire for the daughter to have an interest in learning foreign languages.

Reasoning:

When expressing interest or involvement in a specific activity or subject, the preposition "in" is commonly used. This is true for a wide range of activities, hobbies, and subjects. For example, we say "interested in music" or "interested in sports" to show that someone has a passion or curiosity for these areas.

Similarly, when it comes to learning foreign languages, we use the preposition "in" to indicate interest or involvement. This is because "learning" is an activity that requires active engagement and participation.

Examples:

- "I am interested in learning foreign languages."
- "She has always been fascinated in learning about different cultures and languages."
- "He showed a keen interest in learning French."

In each of these examples, the preposition "in" is used to express interest or involvement in the activity of learning foreign languages.

Conclusion:

In conclusion, the correct answer is "in" because it is the appropriate preposition to use when expressing interest or involvement in a particular activity or subject. In the context of the given sentence, the use of "in" accurately conveys the desire for the daughter to have an interest in learning foreign languages.