In the context of sciences, which of the following is not a recognized division?

In the context of established scientific disciplines, the correct choice is "D" because "Informal sciences" is not a widely recognized division within the framework of scientific study. The field of science is primarily categorized into natural sciences, formal sciences, and social sciences.

Natural sciences encompass fields that study the physical world, including disciplines like biology, chemistry, and physics. These areas focus on measurable phenomena and processes governed by natural laws.

Formal sciences, such as mathematics, logic, and statistics, deal with abstract concepts and theoretical constructs rather than empirical observations. They provide the foundational tools for reasoning and analysis used across various scientific disciplines.

Social sciences study human behavior and societies, incorporating fields like psychology, sociology, and economics. This division examines social dynamics and human interactions, aiming to understand societal structures and functions.

While informal learning and science communication do exist, they do not form a separate branch of scientific inquiry like the other recognized divisions do. Therefore, "Informal sciences" stands out as the correct answer in this context.