What does it mean that DNA replication is a semiconservative process? The replicated DNA will contain two totally new DNA strands.

The replicated DNA will only be half the same nucleotide order as the parent DNA.
Only the top strand is used for DNA replication
The replicated DNA will contain one strand from the parent the original DNA and one new strand.

The correct statement is: The replicated DNA will contain one strand from the original parent DNA and one new strand.

In semiconservative DNA replication, each newly replicated DNA molecule consists of one old/original strand and one newly synthesized strand. This means that during replication, the parental double-stranded DNA molecule separates and each strand serves as a template for the synthesis of a complementary strand. As a result, the replicated DNA molecule retains half of the original nucleotide sequence (old strand) and incorporates a new nucleotide sequence (new strand).