A Renault vehicle. Photograph by Dhiraj Singh/Bloomberg The French auto giant Renault is returning to China through a partnership with Geely Holdings Group in a move that could eventually pose a challenge to Tesla in the electric-vehicle market. The focus of the alliance, announced on Monday, is on Renault-branded gasoline-electric hybrid cars, but the auto makers are also discussing the production of fully electric vehicles, Reuters reported , citing sources it didn’t identify. China is the world’s largest car market, so any move toward producing a Renault-branded EV there could be significant for Tesla . The Tesla Model 3 was...