What is the study of truth and knowledge?

Anthropology
History
Philosophy
Sociology

The correct answer is Philosophy

Philosophy is a form of organized, conceptual thinking that has the ability to move one's own thinking through the identification and formulation of problems, that is, Philosophy is, by nature, problematizing, avoiding providing ready answers to the questions raised and creating new questions, new questions and new problems that make thought never stop its cycle of existence.

Philosophy is a branch of knowledge that seeks to understand the concepts or essences of everything that exists in the world, thus creating conceptual definitions. The concepts, which arise from those definitions, are, in turn, complex meanings that move problems. Problems are also processes by which Philosophy works.

A problem, a question, a question is a process that seeks to find a definition about something. Asking “what is it?”, “How is it?” or "why is it?" is to formulate a problem, and to answer that question is to create a concept. Therefore, asking what Philosophy is is a philosophical attitude.

maybe you need to work on the pipes in the house. i am just saying this because you did not give any details.

the graph shows the spread of railways in the 1800s.

based on the graph, the conclusion that can be drawn about germany is answer d)   by 1880, germany had more rail lines than great britain and russia.