Read the following excerpt from joseph stalin's radio broadcast on july 3, 1941: we must strengthen the red army's rear, subordinating all our work to this cause, all our industries must be got to work with greater intensity to produce more rifles, machine-guns, artillery, bullets, shells, airplanes; we must organize the guarding of factories, power stations, telephonic and telegraphic communications, and arrange effective air-raid protection in all localities. which of the following is the most likely the meaning of "subordinating" a) fighting to survive in a difficult circumstances b) joining with others to achieve a common goal c) placing in a lower or less important position d) achieving with an increased effort or energy