Step 1: Recall the purpose of QA/QC in mineral exploration.
Quality Assurance/Quality Control (QA/QC) ensures that assay data are accurate, precise, and free from systematic errors.
Step 2: Identify the standard QA/QC practice.
Routine insertion of
\[
\boxed{\text{Certified Reference Materials (CRMs), blanks, and field duplicates}}
\]
helps detect contamination, analytical bias, and sampling errors.
Hence,
\[
\boxed{(B)}
\]
is the correct answer.