Questions & Answers about ¿Cómo reaccionará el gerente a este capricho?
Why do we use the preposition a after reaccionará?
In Spanish, the verb reaccionar (to react) is naturally followed by the preposition a to state what someone is reacting to. You don't need words like hacia or para here.
What exactly does capricho mean in everyday Spanish?
Why is it este capricho and not esto capricho?
Because capricho is a masculine singular noun, you must use the masculine adjective este (this). The word esto is the neutral version of "this" which is only used when referring to a general idea, a situation, or an unidentified object, and it is never placed directly in front of a noun.