Under Muslim Law, the marriage whether consummated or not, Iddat has to be observed in case of

In Muslim Law, the concept of Iddat refers to the waiting period that a woman must observe after the termination of her marriage. This waiting period is mandatory for women in case of divorce by the husband as well as in the event of the husband's death. Therefore, Option C is the correct answer as it includes both scenarios where Iddat must be observed: divorce by the husband and death of the husband.