Concept:Talaq al-Bid‘ah is an irregular or innovated form of divorce in Islamic law.
Explanation:Talaq al-Bid‘ah takes effect when a husband divorces his wife in a way that goes against the approved Sunnah method.
The most common form is when a husband pronounces three divorces at one and the same time, for example saying, “I divorce you three times” in one sitting.
This type of divorce is considered sinful, but majority of Islamic scholars still regard it as valid and binding once pronounced.
Divorce pronounced during the wife's menstrual period is also classified as Bid‘ah by some scholars.
However, the standard definition emphasised in examinations is the pronouncement of three divorces simultaneously.
Among the given options, the correct one is the triple pronouncement at once.
Answer:C. three times simultaneously.