In Six Sigma, DMAIC focuses on existing processes that do not meet customer requirements, whereas DMEDI$/$DMADV focuses on $\_\_\_\_.$

Choice $1$ of $4$:Root Cause Statistical Analysis

Choice $2$ of $4$:Development of new products, services, and processes to improve customer needs.

Choice $3$ of $4$:Customer Relationship

Choice $4$ of $4$:Short$-$term improvement