Donna's objective:
As Donna is working on a poster for a music concert, her main objective should be to attract her target audience and convince them to attend the concert.
Step-by-step explanation:
Being a graphic designer, she should add eye-catching elements and populate the poster with a combination of colors to make it more attractive. She should add relevant pictures.
A poster is not complete without the required information about the event. She should add a handful amount of details about the concert enriched with some cheesy one-liners.
Details about the event should be limited as it a poster and not a notice.