A retail company wants to implement a system that can predict customer buying behavior based...

Machine Learning (ML)is the most suitable AI concept in this scenario. ML focuses on developing algorithms that canlearn from structured or unstructured dataand make predictions based on historical patterns.

In this case, analyzing customerbrowsing history and purchase recordsfalls directly undersupervised learning, a subcategory of ML, which is typically used forpredictive modelingin retail (such as next-best-offer, product recommendation, or demand forecasting).

According to the PECB Lead Auditor Study Guide (Domain 1),ML is specifically referenced as the core techniquefor prediction systems, user behavior modeling, and data-driven decision-making systems.

Though Deep Learning (DL) is a subset of ML, it is often used for more complex pattern recognition tasks such as image or speech recognition, which is not explicitly required here.