While right-to-work laws may not "destroy" unions by (i)____________ unionized workers, they do (ii)____________ the spread of unions and thereby (iii)____________ wages within right-to-work states. A. abating the absolute number of B. precipitate C. underprice D. qualifying nearly all of the E. steer F. reduce G. selectively downgrading some of H. impede I. blow up