What are the tall, slender towers used in religious ceremonies found on the taj mahal?

Minarets

A minaret is a slender tower. It is  typically part of a mosque. It has  a balcony from which a muezzin calls Muslims to prayer. it is also known as a lighthouse or goldaste. from the minarets Muslim faithful are called five times to pray by a Muezzin.

The common sense pamphlet i think

Your answer is b , public works