lo vs el in the last section

Question

In the last section of the translation, "between the practical, incredulity and mysticism" is translated as "entre lo práctico, la incredulidad y el misticismo." I don't understand why the práctico gets lo as it's article (other than because the hint said so). Can you explain, please. Thanks

Answer

Incredulidad and misticismo are nouns and so you can directly apply the definite article to them. However práctico is an adjective so I think we use lo + adjective to turn it into an abstract noun.

Answer

Hola George
We use it, as Marsha said, with adjectives. It is as if we were saying "between things that are practical [or practicality] incredulity and mysticism".
Here is a lesson with examples of "lo + adjectives". Have a look.
Saludos
Inma