Among Muslims which school does not mention minimum amount of dower ?

The correct answer is (d). None of the four Sunni schools of Islamic law (Hanafi, Maliki, Shafi’i, and Hanbali) mention a minimum amount of dower. The dower is a payment made by the groom to the bride at the time of marriage. It is a form of compensation for the loss of her virginity and for the expenses she will incur as a married woman. The amount of dower is negotiable between the bride and groom, and there is no set minimum or maximum amount. In some cases, the dower may be symbolic, such as a single coin or a ring. In other cases, it may be a more substantial amount of money or property. The dower is considered to be the property of the bride, and she is free to do with it as she pleases. She may keep it for herself, use it to help support herself and her family, or invest it. The dower is not considered to be a gift to the bride, but rather a payment that is due to her as compensation for her loss of virginity and for the expenses she will incur as a married woman.