In manufacturing systems, Group Technology (GT) primarily brings together and organizes which items to improve efficiency and standardization?

Introduction / Context:
Group Technology (GT) is a powerful concept for organizing manufacturing around families of similar parts and processes. By classifying similarities in geometry, material, and processing steps, plants can reduce setup times, standardize tooling, and design cellular layouts that repeat proven methods across part families.

Given Data / Assumptions:

• GT clusters items that share attributes, not merely documents or simulations.
• The objective is to exploit commonality for throughput and quality gains.
• Benefits include reduced lead time, better scheduling, and reusable process plans.

Concept / Approach:
GT relies on coding/classification systems (e.g., Opitz) to identify part families. Once grouped, facilities adopt standard routings, jigs/fixtures, and work instructions. Problems and tasks also repeat across families, enabling checklist-based problem solving and quicker training. This creates a “learn once, apply many” effect throughout the shop floor.

Step-by-Step Solution:
Recognize that GT is about families—parts, recurring problems, and tasks.Map GT outcomes to cell design, tooling standardization, and SMED-style setup reduction.Select the option that names common parts, problems, and tasks as the organizational focus.

Verification / Alternative check:
Case studies show GT-driven cells reduce WIP and transport by co-locating processes used by a part family and using standardized fixtures and programs.

Why Other Options Are Wrong:
A/B/C mention partial activities but miss GT’s central idea: organizing by commonality across parts and recurring work.

Common Pitfalls:
Grouping by machine type instead of part families; neglecting data-driven classification leading to arbitrary cells.

Final Answer:
Common parts, problems, and tasks.