The correct answer to the following question will be "Formal languages".
Explanation:
These are the languages that are developed for specific purposes by humans.
For eg, the syntax used by mathematicians is indeed an official or formal language which is particularly effective in indicating numerical and symbolic connections. Chemists employ a technical language to embody the molecules.
Programming languages are the languages of a formal type intended to be used to communicate complex calculations.
Such languages are, thus, the languages that people developed for specific purposes.