The answer is (B): hepat/o/megaly.
Explanation for each option:
(A) hepat/oma: This term refers to a tumor of the liver. "Hepat" means liver, and "oma" means tumor. It does not indicate enlargement.
(B) hepat/o/megaly: This term means enlargement of the liver. "Hepat" refers to the liver, "o" is a combining vowel, and "megaly" means enlargement. Therefore, this is the correct answer.
(C) hepat/o/cele: This term refers to a hernia or protrusion of the liver. "Hepat" means liver, "o" is a combining vowel, and "cele" means hernia or swelling. It does not mean enlargement.
(D) mega/hepat/ic: This term is not a standard medical term. "Mega" means large, "hepat" refers to the liver, and "ic" is a suffix meaning pertaining to. However, it does not specifically mean enlargement of the liver.
In summary, the correct medical term for enlargement of the liver is hepat/o/megaly.