how much is helping his friend career portfolio? What is the most appropriate advice for him to offer?

A pick items that show a variety of your skills
B use every piece of work you have done
C include no more than two former projects
D select work that is at least five years old

A pick items that show a variety of your skills

The most appropriate advice for helping his friend with their career portfolio is to pick items that show a variety of their skills. This will showcase their versatility and competence in different areas, making them a more attractive candidate to potential employers or clients. It is important to demonstrate a range of abilities and experiences to highlight their strengths and capabilities effectively. Including a diverse selection of work will also give a more well-rounded view of their professional background and qualifications.