A person with group A blood

Correct Answer: A

Rationale: Group A individuals have anti-B antibodies; genotype must be AA or AO, not AB; they can have an O parent (AO offspring) and children of A or O.

Correct Answer: C

Rationale: Inulin measures ECF volume as it's confined to extracellular spaces; D2O measures TBW, not ICF directly.

Correct Answer: A

Rationale: Persistent vomiting loses H+, raising pH and HCO3- (metabolic alkalosis).

Correct Answer: C

Rationale: High K+ disrupts cardiac membrane potential, risking arrhythmias; renal failure and crush injuries elevate K+.

Correct Answer: B

Rationale: The muscles which are not under control, are involuntary muscle, for example Smooth or unstrained muscles and cardiac muscles.