Final answer:
In 'The Time Machine,' the fate of Weena is not explicitly outlined, making option d: none of these, the correct choice.
Step-by-step explanation:
In The Time Machine by H.G. Wells, Weena, a character from the future world, does not return with the protagonist during his journey back to his own time. None of the given options (a, b, and c) accurately describe what happened to Weena, as the events concerning her are not clearly addressed at the end of the story. The reader is left to surmise her fate. Therefore, the correct answer to the question 'What happened to Weena when they left on the time machine?' would be option d: none of these.