Answer:
The antonym simple shows that the word complex means complicated.
Step-by-step explanation:
Antonyms are words that have opposite meanings. As some words have more than one meaning, they can have multiple antonyms. For example, the antonyms of the word light are both heavy and dark. That's why we need to pay attention to the context. It can help us determine what words mean more easily.
Here, we have antonyms simple and complex. When something is simple, it is easily understood or done. The opposite of that is when something is difficult to understand, when something is complicated. Based on that, we can conclude that the word complex means complicated.