Answer:
The correct answer is "DnaB propels the PhiX174 phage leading strand synthesis replication fork".
Explanation:
The PhiX174 phage is a DNA virus that infects Escherichia coli. It is false that DnaB propels the PhiX174 phage leading strand synthesis replication fork when the phage replicates. Actually, PhiX174 phage uses the replication machinery of their host to replicate. If the phage faces DNA damage for instance by exposure to UV light, the replication fork overcomes its arrest by the use of the primosome and Rep helicase.