To solve this problem, we need to fill in the blanks with the most suitable option from the given choices. The context of the sentence involves a new shopping experience that is without human interaction, suggesting a high level of automation in the store's operations. Let's analyze the options:
- Mechanical, true: "Mechanical" typically refers to something involving machinery or gears, which does not quite capture the modern, technology-driven aspect of the store. "True" is more about authenticity, which doesn't directly relate to the shopping experience.
- Engineered, realistic: While "engineered" can imply design and technology, the word "realistic" in this context doesn't strongly convey the absence of cashiers or hands-on experience.
- Automated, hands-free: "Automated" appropriately describes a system without human intervention, but "hands-free" implies lack of physical interaction, which contrasts with the requirement of a "hands-on" experience.
- Fully-automated, hands-on: "Fully-automated" perfectly describes a setup requiring minimal human touch, and "hands-on" addresses the interactive technology-driven experience for customers.
Based on these explanations, the most suitable choice is "Fully-automated, hands-on" since it accurately captures both the technology aspect of the store and the nature of the shopping experience being hands-on despite being without cashiers.
Therefore, the completed sentence is: "At a fully-automated store recently launched by a Kochi-based startup at the city’s Gold Souk Grande Mall, customers get a hands-on experience of what cashierless shopping feels like."