Among light and dark reaction which reaction is more temperature affected?

In dark reaction, first reaction is the

Read the oven statements and choose the correct option br A- Like dark reactions, light reactions are also temperature sensitive but are affected to a much lesser extent, br B- C_4 plants respond to lower temperatures and show higher rate of photosynthesis.

Among the following pair of reactions in which pair second reaction is more reactive than first for S_(N^(1)) reaction?

Among the following pair of reaction in which pair the second reaction is more reactive then first in S_(N^(2)) reaction ?

Among the following pair of reactions in which pair the second reaction is more reactive than first in S_(N^1) reaction ?

Light and dark reactions are interdependent. Explain