You're tasked with selecting the appropriate metrics to evaluate the success of a campaign at different stages of the marketing funnel. Based on your understanding of aligning metrics with funnel stages, match the following metrics with the correct stage:
- Metric I: Lead Conversion Rate
- Metric II: Engagement Rate on Social Media
- Metric III: Customer Lifetime Value (CLTV)
- Metric IV: Website Traffic Volume
Identify the most suitable stage of the marketing funnel for each metric.