To solve this problem, we need to identify the term that describes the process of breeding crops with higher levels of vitamins, minerals, proteins, and healthier fats. Let's analyze each option:$\newline \bullet$Option 1: Bio-magnification - This refers to the increase in concentration of a substance, such as a pesticide, in the tissues of organisms at successively higher levels in a food chain. It is not related to breeding crops.$\newline \bullet$Option 2: Bio-remediation - This is the process of using microorganisms or plants to detoxify and restore polluted and degraded ecosystems. It is not related to breeding crops.$\newline \bullet$Option 3: Bio-fortification - This is the process of increasing the nutritional value of food crops by breeding them to have higher levels of vitamins, minerals, proteins, and healthier fats. This matches the description given in the question.$\newline \bullet$Option 4: Bio-accumulation - This refers to the accumulation of substances, such as pesticides, in an organism. It is not related to breeding crops.$\newline$Based on the analysis, the correct term for breeding crops with higher nutritional value is Bio-fortification.$\newline$Therefore, the correct option is Option 3: Bio-fortification.