Read this statement from an argumentative speech. the 15 percent increase in orchestra enrollment is in-your-face proof that publicity pays off. what is most needed to strengthen this statement?

On what political idea did president truman base the marshall plan? as economic aid increased in europe, the friendship of nations with the united states would increase. as peace throughout the world increased, the threat of another world war would decrease. as prosperity in europe increased, the threat of communism spreading would decrease. as the power of capitalism increased in europe, stalin's power in the soviet union would decrease.