单选题 The new model of the car was put into production in 2007, ______ helped to provide another 1,400 jobs.
【正确答案】 D
【答案解析】[解析] 本题考查非限制性定语从句的关系代词。非限定性定语从句中，只有which可以指代事物，即“the new model of that car was put into production in 2007”，在定语从句中做主语，故正确选项为D。