Variation due to the mutation or variation due to the recombination during gametogenesis result is changed frequency of genes and alleles in future generation which result into stabilisation and directional change in which more individual acquire mean character value.

Stabilization and directional change is the correct answer.

Stabilization refers to a process in which a population or species remains relatively unchanged over time. This means that individuals within the population continue to possess similar traits and characteristics, leading to little to no variation. On the other hand, directional change refers to a process in which the traits and characteristics of a population change in a specific direction over time.

Explanation:

Stabilization and directional change are the most suitable options for describing the process of growing slower in new habitats. Let's discuss why the other options are not the correct answers:

a) Evolution and speciation: Evolution refers to the gradual change in the inherited traits of a population over successive generations, while speciation refers to the process of forming new species. While evolution and speciation can certainly occur in new habitats, they do not specifically explain the process of growing slower.

b) Disruption and non-directional change: Disruption refers to a sudden disturbance or change in the environment, while non-directional change refers to random variations in traits within a population. These options do not accurately describe the process of growing slower in new habitats.

Now, let's understand why stabilization and directional change are the correct answer:

When a population or species enters a new habitat, they may experience new environmental conditions, resources, and interactions with other organisms. As a result, the population may undergo changes in their traits and characteristics. However, over time, the population may stabilize, meaning that the rate of change slows down and the population reaches a relatively stable state in terms of their traits.

Directional change, on the other hand, refers to a process in which the traits and characteristics of a population change in a specific direction. In the context of growing slower in new habitats, directional change can refer to the population adjusting their growth rate to match the new environmental conditions. This can occur through natural selection, where individuals with traits that allow them to adapt to the new habitat better have a higher chance of survival and reproduction. Over time, this can lead to a decrease in the overall growth rate of the population.

In conclusion, stabilization and directional change are the most suitable options for describing the process of growing slower in new habitats. Stabilization refers to the population reaching a relatively stable state in terms of their traits, while directional change refers to the population changing their traits in a specific direction, such as adjusting their growth rate to match the new habitat.