It soon became apparent that there was nothing mystical about the vanishing of Donna Noble . Down on the coast was a small dock , barely noticeable from the cliff top where we had previously stood . In a bid to make a quick buck , and raise themselves from the poverty they were forced to inhabit ; a few local people had set up a Ferry business , taking holiday makers over to the next island for ridiculously high prices . The reason why Donna 's DNA trail vanished , was because the ocean had taken away any trace of her .
According to the above context, choose the best option to answer the following question.
Question: What might have happened before this disappearance ?
Options:
- The police investigated Donna Noble 's disappearance and concluded that she had mystically vanished .
 - None of the above choices .
 - The police investigated Donna Noble 's disappearance and concluded that she had taken a ferry .
 - Someone reported Donna Noble 's disappearance and then her body was found at the cliff top .


The police investigated Donna Noble 's disappearance and concluded that she had taken a ferry .