To solve this problem, we need to identify the term that describes the unauthorized use of bioresources by multinational companies and organizations. Let's analyze each option:$\newline \bullet$Option 1: Biodegradation - This refers to the breakdown of organic substances by natural means, such as by microorganisms. It is not related to unauthorized use of bioresources.$\newline \bullet$Option 2: Biopiracy - This term refers to the exploitation of bioresources by organizations or companies without proper authorization or compensation to the country or people from which the resources originate. This matches the description given in the question.$\newline \bullet$Option 3: Bio-infringement - This is not a standard term used in the context of bioresources and does not match the description.$\newline \bullet$Option 4: Bioexploitation - While this term suggests exploitation, it does not specifically imply unauthorized use as described in the question.$\newline$Based on the analysis, the correct term that describes the unauthorized use of bioresources is Biopiracy.$\newline$Therefore, the correct option is Option 2.