Questions: lateralization

The answer is the fourth one: lateralization.

Explanation for each option:

1. Synaptogenesis: This refers to the formation of synapses between neurons in the nervous system. It is a process that occurs throughout a person's life but is particularly active during early brain development. It is not specifically related to differences between hemispheres in language function.

2. Wernicke's area: This is a specific region in the brain located in the left hemisphere, typically associated with language comprehension. While it is related to language function, it does not describe the differences between hemispheres.

3. Brain organization: This is a broad term that refers to the overall structure and functional arrangement of the brain. It does not specifically address the differences between hemispheres in language function.

4. Lateralization: This term refers to the tendency for some neural functions or cognitive processes to be more dominant in one hemisphere than the other. In the context of language, lateralization often refers to the fact that language functions are typically more dominant in the left hemisphere for most people. Therefore, this is the correct answer.

In summary, lateralization is the term that describes the differences between hemispheres in the areas underlying language function.