Which claim is the most effective for the argument that learning another language has many advantages?

Question

Learning another language has many advantages for people, no matter who they are or how old they are.
There are many advantages to learning another language, but it can also be a difficult and frustrating process for some people.
Learning another language has many advantages for people, including improved memory and ability to multi-task.
There are many advantages to learning another language, and some people are more motivated to become bilingual than others.

Answer 1

The most effective claim for the argument that learning another language has many advantages is:

"Learning another language has many advantages for people, including improved memory and ability to multi-task."

This claim is effective because it not only asserts that there are many advantages to learning another language, but it also specifies some of those advantages, such as improved memory and multitasking ability. This gives the argument more weight and makes it more compelling by providing concrete examples of the benefits.