Final Answer:
The child being of male gender and Caucasian race (A) is not a risk factor for a possible genetic disorder in this case.
The correct option is A) The child is of male gender and Caucasian race.
Explanation:
While gender and race can sometimes be associated with certain genetic disorders, they are not necessarily risk factors for speech delay in a 15-month-old boy. In fact, speech delay is a common developmental milestone that many children go through, regardless of their gender or race.
Therefore, the nurse should focus on gathering more information about the child's family history (B) and birth circumstances (C and D) to determine if there are any genetic or medical factors that could be contributing to the child's lack of speech.
Therefore, The correct option is A) The child is of male gender and Caucasian race.