Utilizar is the answer your looking for
1. hacer las maletas
2. traje de baño
3. el itinerario
4.la identificacion
5.facturar el equipaje
6. donde queda
The answer is B. "Esta" is more of a location and feeling word and "es" is a description word. The phrases are talking about how she is smart and pretty so they are both describing her therefor he answer is B.