Option 1 -> Product deals with the actual goods/services, their features, quality, design, and branding - not distribution channels.
Option 2 -> Price focuses on pricing strategies, discounts, and payment terms - not related to how products are distributed.
Option 3 -> Place concerns distribution channels, logistics, and how products reach customers - a three-level channel is a distribution strategy.
Option 4 -> Promotion involves advertising, sales promotion, and communication strategies - not about distribution channels.
Hence, Option 3: Place -> A three-level channel of distribution (typically Manufacturer → Wholesaler → Retailer → Consumer) is a distribution strategy that falls under the "Place" element of the marketing mix, which addresses how and where products are made available to customers -> correct