Final answer:
The provided reference does not state the number of workers who went on strike in France to pressure the government to reject Marshall Aid, hence a precise answer cannot be given based on the information provided.
Step-by-step explanation:
The question relates to a historical event where workers went on strike in France. During the post-war period, many workers went on strike to demonstrate their dissatisfaction with various government policies and economic conditions. Specifically, the information given does not directly state the number of workers who went on strike in France to pressure the government to reject Marshall Aid. Historical instances of labor upheavals in France include mass walkouts in 1919 due to unemployment and inflation and the involvement of the Paris Commune. Concerning the Marshall Plan, it was an American initiative to aid Western Europe economically, including France, after World War II. There were general strikes and labor disputes during that era, but the exact number of workers that went on strike specifically to pressure the government to reject the aid is not provided in the reference information.