Questions & Answers about A realidade é simples.
A is the definite article meaning the.
In Portuguese, it is very common to use the definite article with nouns, even in cases where English might not. So A realidade is literally the reality.
In a sentence like this, Portuguese prefers A realidade é simples rather than just Realidade é simples.
- A realidade = the reality
- é = is
- simples = simple
Without the article, the sentence would usually sound unnatural in normal speech, unless it were a title, heading, or a very stylized statement.