Final answer:
To a job interview, the best option is to wear a suit (el traje). For a party, you can wear a t-shirt (la camiseta) or a sweatshirt (la sudadera) depending on the dress code.
Step-by-step explanation:
For a job interview, the best option to wear would be el traje (the suit). A suit is a professional and formal outfit that shows respect and professionalism. It gives a good impression to the employer and shows that you take the job interview seriously.
On the other hand, for a party, you can wear la camiseta (the t-shirt) or la sudadera (the sweatshirt) depending on the dress code of the party. T-shirts are more casual and comfortable, while sweatshirts can be a bit more stylish and trendy.