In this task, you are given a sentence in the Spanish language. Your task is to translate the Spanish sentence into the English language.

La característica central de los trastornos fóbicos es
The central feature of phobic disorders is

La inteligencia fluida
The fluid intelligence

Según el mecanismo de Frank-Starling del corazón, en condiciones fisiológicas el gasto cardíaco es directamente proporcional a

According to the Frank-Starling mechanism of the heart, under physiological conditions the cardiac output is directly proportional to