The clayton act prohibited select one: a. all conglomerate mergers. b. any merger if its effect was to substantially lessen competition or create a monopoly. c. all horizontal mergers. d. all vertical mergers.

B. any merger if its effect was to substantially lessen competition or create a monopoly.

Explanation:

The Clayton antitrust act according to the federal trade commission addresses the issue of mergers and acquisitions. It prevents any merger or acquisition that is effect to substantially lessen competition or create a monopoly. To avoid unfair prices of goods and services due to monopoly.

i think it is the third one.

answer; disconfirm the catharsis theory;