Interpersonal communication skills are something we<u> learn, gain and practice</u> throughout our lifetime. We cannot say they are fixed because they <u>can improve and deteriorate </u>without any doubt, depending on if we work on them or not. They are not genetic due to the fact that every person can<u> learn </u>how to develop better interpersonal communication skills. We cannot treat them as impractical knowing that they <u>upgrade the relationship</u> we have with other people. So, the only correct and the only possible answer is <em>changeable.</em>
You can see the tools next to the person which usually means work. This can refer to how they worked to get money where the money is on the opposing side of the person.
