Final answer:
The correct sequence for viral replication is Attachment, Entry, Replication, Copies made, and Exit. Viruses attach to the host cell, enter by penetration, replicate their genetic material, assemble new virions, and then exit to infect other cells.
Step-by-step explanation:
The correct order of steps for viral replication is d. Attachment, entry, replication, copies made, exit. There are six basic stages in the virus replication cycle: attachment, entry (penetration), uncoating (if necessary), replication, assembly, and release.
During the attachment phase, the virus attaches to specific sites on the cell surface. This is followed by entry, where the nucleic acid of the virus enters the host cell, which may involve uncoating. Then, the viral nucleic acid undergoes replication and transcription. After copies of the viral components are made, the viruses are assembled inside the host cell. The exit, or release, stage is when new virions are released into the host organism to infect adjacent cells and repeat the cycle. This release can occur when the host cell dies or through budding from the host cell membrane.