Which of the following are common maintenance procedures for home fitness equipment? A. cleaning dust and dirt B. ensuring proper assembly C. completing preventive maintenance D. all of the above Please select the best answer from the choices provided. A B C D

Quick using the information in the graph, one might speculate that a) w. w.i created increased job opportunities in the u. s. b) the election of president hoover in 1936 caused unemployment to decline. c) the return of soldiers following w. w.ii caused unemployment to increase in the u. s. d) the new deal programs of president roosevelt created employment opportunities in the u. s.