Answer: I would contend that the right answer is the B) Players often return to a game after a head injury—they.
Explanation: By using a dash or specifically an "em-dash" ( — ) at the end of the sentence, the writer is clarifying or amplifying the information that he or she has already provided (that players often return to a game after a head injury). Options C and D are grammatically incorrect, so they should be discarded. Furthermore, since the two sentences ("players..." and "they do not want...") are not independent, the use of a semicolon (option A) should also be discarded.
People in the market can take your money. you could be buying something that really isn't worth as much as it costs.
Odysseus because he traveled everywhere facing new obstacles each time and then he returned back home.
The verb in this particular sentence is "hiking."