Initiation occurs prior to elongation; both are part of the process of:

Focus on initiation and elongation: These terms are commonly associated with transcription and translation. In transcription, initiation involves the binding of RNA polymerase to the promoter region of DNA, and elongation involves the addition of nucleotides to the growing RNA strand. In translation, initiation involves the assembly of the ribosome and mRNA, and elongation involves the addition of amino acids to the growing polypeptide chain.

Eliminate incorrect options: RNA splicing does not involve initiation or elongation, and DNA replication uses different terminology (e.g., unwinding, primer synthesis). This leaves transcription and translation as the relevant processes.