Explanation: The correct answer is d. Abdominal pain and diarrhea. Abdominal pain and diarrhea are common clinical manifestations of immunodeficiency disorders. The weakened immune system makes the child more susceptible to gastrointestinal infections, leading to these symptoms.

Incorrect choices:

a. Rash and hives are more common clinical manifestations of allergic reactions or immune hypersensitivity disorders, not immunodeficiency disorders.

b. Rapid weight loss may be seen in conditions like malnutrition or metabolic disorders but is not a typical clinical manifestation of immunodeficiency disorders.

c. Excessive thirst and frequent urination are clinical manifestations of diabetes or other endocrine disorders, not immunodeficiency disorders.