Solving a problem in chemistry section 1 point 45

Solving a problem in chemistry section 1 point 45

45. The action which factors can shift the equilibrium of these reactions to the right:
a) C (graphite) + H2O (g) ↔ CO (g) + H2 (g) - 129.89 kJ;
b) N2O4 ↔ 2NO2 - 54,47 kJ;
in) 2SO2 + O2 ↔ 2SO3 + 192,74 kJ?

Additional information:

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)