Concept:The verse warns against wasteful spending and links extravagant people to evil companionship.Explanation:In Qur'an 17:27, Allah says that spendthrifts are brothers of Satan.This means those who waste resources excessively are described as companions or associates of the Devil.The verse teaches that wastefulness is an evil trait and displeasing to Allah.Therefore, among the given options, extravagant people are likened to associates of Satan.Answer:C. Satan