Buenas noches is how you say it.
The way you wrote those options, it would seem that none of them are correct. You can eliminate A and C immediately, because in A, the infinitive form of the verb salir is used (when you should use the present form), and in C, the form salis refers to vosotros/vosotras, not to ellos.
This means that the correct answer has to be B, but you've misspelled sales - it should be saleN. If that is the case, then you should definitely choose B.
Answer:
1. Enrique doesn't want to buy ugly pants.
2. The sombrero is horrible, so he doesn't want to buy it.
3. He doesn't like the t-shirt.
4. He wants to buy the blue shoes.
5. He wants to buy the shirts.
6. He doesn't need shorts
7. He prefers the green socks
8. He prefers the white jacket.
Explanation:
Answer: The conjugation for <u>estudiar </u>would be: <u>Estudian</u>
Ellos Estudian
ellas Estudian
ustedes Estudian
It's the same for all of them.