what is C₂ pathway? pls anwer fast iits urgent !!

Photorespiration is also called C₂ pathway since it involves synthesis of two-carbon compounds.
For more information on photorespiration please follow the link

https://www.meritnation.com/ask-answer/question/what-is-photorespiration-and-organelles-involved-in-photores/photosynthesis-in-higher-plants/7353783