Answer:
The effect that is often created by adding more complex structure is that they create content that lacks focus.
Explanation:
It is considered formal and correct to add complex ideas to essays and academic written pieces but when the author uses too many complex structures, the reading becomes hard to understand and sometimes it can even be hard to follow the order of it, ideas might be misunderstood or get totally lost in the context. It is important to have a balance between simple and complex sentences when we make written material.
