Blood cell changes in leukemia and measles

Steps:

• Identify key hematological effects: leukemia causes uncontrolled WBC proliferation, increasing total WBC count.
• For measles, a viral infection, acute phase often elevates WBC due to immune response, though transient.
• Compare to options: seek row showing consistent increases for relevant parameters in both conditions.
• Select D as it matches elevated WBC profiles without contradictions.

Why D is correct:

• Leukemia and measles both result in increased WBC counts per standard hematology definitions, reflecting proliferation and immune activation.

Why the others are wrong:

• A: Incorrectly shows decreased for leukemia, ignoring WBC elevation.
• B: Wrongly lists normal for one condition and decreased for measles, contradicting immune response increase.
• C: Falsely decreases the third value, not aligning with both conditions' elevations.

Not enough information on exact parameters (e.g., WBC, RBC specifics), but D fits typical profiles.

Final answer: D