In the mid-1950s, polish workers rebelled because they wanted a. political reforms. b. better pay. c. more personal freedom. d. national independence.

The correct option is B
the workers  banners read bread and freedom. The relaxation and freedom granted by the polish government after the death of Stalin had not satisfied the workers who wanted better wages and working conditions. The protests were however localized and were crushed ruthlessly.

The answer is d.  the north had organized schools, whereas the south had few organized schools.