Answer:
psychopaths are able to manipulate because they can gaslight someone into questioning their own sanity and their own judgement and therefore psychopaths can sweep in and manipulate someone. They're also not easy to identify and diagnose because a lot of people gaslight and manipulate so it could just be considered "part of life" instead of psychopathic insanity.
Explanation:
"The" is the particular article
Articles are like adjectives, they modify nouns
"The" is particular, because it specifies the noun you are talking about. If I say "Let's read the book" I am referring to a specific one
