Aclient with ovarian cancer is ordered hydroxyurea (hydrea), an antimetabolite drug. antimetabolites are a diverse group of antineoplastic agents that interfere with various metabolic actions of the cell. the mechanism of action of antimetabolites interferes with: a. the chemical structure of deoxyribonucleic acid (dna) and chemical binding between dna molecules (cell cycle-nonspecific).b. normal cellular processes during the s phase of the cell cycle.

The correct answer will be option-B

Explanation:

Anti-metabolites are the chemical drugs which interfere with the chemical enzymes used during the DNA synthesis.

The drugs act during the DNA replication process which takes place in S or synthesis phase of the cell cycle which prevents the DNA replication. They affect the DNA synthesis by acting as a substitute for the metabolite utilized during the DNA synthesis metabolism. They are used in cancer treatment chemotherapy.

Thus, Option-B is the correct answer.