<span>mochila is feminine, thus, la for singular, las for plural so if it is a definite article, and una or unas if it is indefinite article.</span>
C.
mayor número de turistas
I promise:)
This sentences is grammatically incorrect because the action and the period of time are not coherent.
It is possible to say " trabajo en esa tienda hace dos años/meses" which would mean that you have been working in that store for a year or a month.
but the expresión "hace que"+ period of time does not exist.
Another possibility might be (if you been working there for only 2 hours) "Trabajo en esa tienda hace dos horas" It would mean that you recently started working there. <span />
