According to the text, which of the following contribute to changes in language?

historical events
inventions
discoveries
new ideas
individuals
contact with other cultures
social reform
historical crises

The correct options are: "historical events -  contact with other cultures"

It is called linguistic change to the process of modification and transformation that, in its historical evolution, experience all languages in general, and the linguistic units of each of its levels in particular.

The linguistic change differs from the linguistic variation in that in the first the modifications are diachronic and, therefore, are studied by historical linguistics, while the variations are synchronous and analyzed, among other disciplines, by sociolinguistics. The linguistic change is an internal process of the language that has nothing to do with the change of language or linguistic substitution that is a process conditioned by external factors.

Two factors that have always intervened in the linguistic change have been the loans and the analogy, the first is an example of external cause and the second of internal cause. Linguistic changes are grouped by convenience at three levels: phonetic change, morphosyntactic change and lexical-semantic change.

i would say the correct answer is not concrete.

kenny´s more than 25 years of relevant public service. in the army for two decades, as official representative for four years, and now for the department of state, as ambassador. this career clearly demonstrates great capacities in the public sector.