A COMPREHENSIVE STUDY OF AGENTIC AI SYSTEMS: EXPLORING THE EVOLUTION FROM PREDICTIVE MACHINE LEARNING MODELS TO AUTONOMOUS, GOAL-DIRECTED, AND DECISION-MAKING ARTIFICIAL AGENTS IN COMPLEX ENVIRONMENTS. J. Integr. Sci. Soc. Impact [Internet]. 2026 Mar. 31 [cited 2026 Apr. 5];2(1):91-100. Available from: https://jissi.org/jissi/article/view/37