This document is a sequel to the working paper titled “Human-Centred Research & Design for Inclusive Mobility. Sections A & B” and published at HAL Science, the French open-access repository. The whole work consists of five sections. Section A presents the French establishment Université Polytechnique Hauts-de-France (UPHF) and the Laboratory of Industrial and Human Automation Control, Mechanical Engineering and Computer Science (LAMIH UMR CNRS 8201). The context of the work is described in terms of inclusive mobility, particularly regarding the human-centred design of technologies dedicated to human mobility and handicapped people. Section A also presents the technical and scientific equipment dedicated to mobility and transport at LAMIH. Section B explains two human-centred theoretical approaches to design technologies and services dedicated to human mobility in the time of Industry 5.0. As a reminder, according to the European Union, the European industry will serve society better by complementing the techno-economic vision of Industry 4.0 (digitalization, AI technologies, efficiency and flexibility of production) with the Industry 5.0 perspective which focuses on human centricity, sustainability and resilience. Section C (the present document) is about science, more precisely the basics of research through explanatory definitions and three research approaches (quantitative approach, qualitative approach, and mixed methods approach). Indeed, the students who are interested in the human-centred design have to know the scientific methods used along the design process. Section D will deal with ethical considerations in research and Section E with article writing.