The process of converting carbon dioxide into sugars is called ?

Carbon fixation is the correct answer.

Explanation:

The answer is the following: the process of converting carbon dioxide into sugar is called carbon fixation and it is an endothermic redox reaction. Photosynthesis takes energy from sunlight to convert carbon dioxide into carbohydrate. Due to this, it is the correct answer.

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.