Answer:
Casual
Step-by-step explanation:
Formal business attire would be a suit and tie, or a conservative, simple skirt and a blouse. A pantsuit would also be accepted.
Business casual attire would include items in-between formal business and casual attire. An example would be a button-up polo shirt and khakis or a sweater tunic and solid leggings.
Casual attire is what you would wear on an everyday basis with no special occasion. A T-Shirt and jeans is a perfect example of this.