What is Social Engineering

So you think you know all about social engineering eh? And are about to embark on a lucrative criminal based career that will land you fame and notoriety and also a stint at Her Majesty’s pleasure too. But what is social engineering? 

Select one from the list below of the 3 kinds of skills a social engineer is likely to have. 

Social engineering uses many different kinds of techniques to trick you into giving away information or access to information and buildings. From the list below select all the techniques that is indicative of a social engineering type attack?