Answer :
Answer:
Focus
Explanation:
The word focus is doing one certain thing so technically it is specialising in something.
The ability of the brain to focus its attention on a single stimulus for an extended length of time as known as focused attention. Focused attention is a sort of attention that allows you to recognize relevant inputs fast.
Correct Option is B.(focus)
To specialize implies to be good at something, which means you must be concerned in order to get good at it, hence the answer is B.
To know more about word specialization, refer to the link:
https://brainly.com/question/9347430