Answer: Inference clue
Step-by-step explanation: The sentence has an inference context clue. When a word is unknown, an inference clue gives a few hints for the reader to guess the meaning. In this sentence, the word "abolishes" might be unknown for some people; therefore, the words "policy" and "avoid wastage of food" imply that you are talking about some law that must be prohibited in order to prevent the rice from going to waste.