Q.What is meant by stabilization? Mention the parameters which affect the stabilization.

Stabilization is the process of keeping the operating point (collector current $I_C$) constant against variations caused by temperature and transistor replacement. …

[!TLDR]

Stabilization is keeping $I_C$ (the Q point) fixed despite temperature changes and device replacement; it is affected by the temperature-dependent parameters $I_{CBO}$, $V_{BE}$ and $\beta$.

Stabilization is the process of making the operating point — chiefly the collector current $I_C$ — independent of variations that tend to shift it. The main causes of shift are temperature changes and replacement of the transistor by another of the same type. A good biasing circuit (such as voltage divider bias) provides stabilization so that the Q point does not move.

Parameters affecting stabilization (all temperature dependent):

1. Reverse saturation / leakage current $I_{CBO}$: roughly doubles for every 10 degree Celsius rise; it enters $I_C = \beta I_B + (1+\beta)I_{CBO}$, so a rise directly increases $I_C$.
2. Base-emitter voltage $V_{BE}$: decreases with temperature (about 2.5 mV per degree Celsius), which tends to increase $I_C$.
3. Current gain $\beta$: increases with temperature, again raising $I_C$. …