The correct answer is: a) University.
Taxila (Takshashila) was an ancient city located in the northwestern part of the Indian subcontinent. It was an important center of learning during the pre-Mauryan period and was known for its university. The university at Taxila was one of the oldest and most prestigious universities in the world. It attracted students from all over the Indian subcontinent and from other parts of Asia. The university offered a wide range of courses, including the arts, sciences, medicine, and law. It was also a center of Buddhist learning.
The other options are incorrect because:
- Taxila was not a military academy.
- Taxila was not a port city.
- Taxila was not a temple complex.