Use reasoning to lead to the answer of the following question:
Though he was an adult he still stereotypical slept on a sofa bed in his parent's what\nOptions:\n- garage\n- horseradish\n- living room\n- guest room\n- basement

basement
At his parent's basement, there was a sofa bed.

Though he was an adult he still stereotypical slept on a sofa bed in his parent's basement.

.

So, the answer is basement