1. The problem is to correctly complete the constructor of the subclass \texttt{Athlete} which extends \texttt{Person}.\n\n2. In Java, when a subclass constructor is called, it must explicitly call the superclass constructor using \texttt{super(...)} before accessing or assigning subclass fields.\n\n3. The correct syntax is to first call \texttt{super(dob, ht);} to initialize the inherited fields \texttt{myDOB} and \texttt{myHeight} from \texttt{Person}.\n\n4. After calling \texttt{super(dob, ht);}, assign the subclass field \texttt{mySports} with the parameter \texttt{sports} using \texttt{this.mySports = sports;}.\n\n5. The other options are incorrect because:\n- \texttt{mySports = sports; super(dob, ht);} calls \texttt{super} after using \texttt{mySports}, which is not allowed.\n- \texttt{super(dob, ht); String[] mySports = sports;} declares a new local variable instead of assigning the instance variable.\n\n6. Therefore, the correct replacement for [ ? ] is:\n\n$$\texttt{super(dob, ht); this.mySports = sports;}$$