TASK DEFINITION: In this task, you are given a sentence in the Spanish language. Your task is to translate the Spanish sentence into the English language.
PROBLEM: El diagnóstico de sarcoidosis se realiza en base a

SOLUTION: The diagnosis of sarcoidosis is based on

PROBLEM: La característica central de los trastornos fóbicos es

SOLUTION: The central feature of phobic disorders is

PROBLEM: El troncoencéfalo o el tronco del encéfalo es la parte del Sistema Nervioso formada por

SOLUTION:
The brainstem or brainstem is the part of the Nervous System formed by