Step 1: Compare cold and hot working side by side.
Cold forming is carried out below the recrystallisation temperature, essentially at room temperature, while hot forming happens above it. This single difference in temperature is the root cause of almost every contrast between the two, including force needed, surface quality, and dimensional control.
Step 2: Rule out the wrong options first.
Cold working actually needs higher forces because the metal is stronger and less workable at low temperature, so lower force is wrong. Grain refinement through recrystallisation is a hot working benefit, not a cold working one, since cold working elongates grains instead of refining them. Cold worked parts usually get harder and less ductile, so a follow up anneal is often needed rather than eliminated.
Step 3: Focus on what temperature control gives you.
Because there is no heating and cooling cycle in cold forming, there is no thermal expansion followed by contraction, and no oxide scale forms on the surface either. This means the finished part keeps very close to its intended dimensions and has a clean, smooth surface, which is precisely the close tolerance advantage cold forming is known for.
\[ \boxed{\text{close tolerance as no shrinkage occurs}} \]