(c) 3,4,6. The first blank requires an adjective, i.e., 1,2 or 3. So, options (d) and (e) get eliminated. The second blank needs a noun and hence cannot take 2 which is an adjective to make any sense. So, option B gets eliminated. Now, option 6 is common to both (a) and (c) take the same option 6 the third blank The fact that the critics feel compelled to justify their liking for mass movies reveals that their stakes lie in art movies. Therefore, option (a) is ruled out.