Answer:
Todos nadamos / Todos nadan (We all swim (Todos nadamos) and You all swim (todos nadan))
Yo no (Not me or no, me would be either yo no or no yo depending on what you want to say (Can I get some context?))
A la semana
los días
nado tres veces (I swim three times (tres veces is perfectly fine))
Explanation:
All were correct depending on what you wanted to say, since I didn't get any context.
Answer: I would contend that the right answer is actually the B) "de los neumáticos."
Explanation: Just to elaborate a little on the answer, it can be added that the only object from the list that has pressure (presión) in it is the tire (neumático). Gas (option A), windshield (option C), and breaks (option D) do not have pressure in them. Therefore, it is correct to say that the employee working at the gas station did not check the tire pressure.