Answer:
physical
Explanation:
Because you can see the evidence that is left behind. ( I hope that makes sense)
The answer is C a questionnaire because the researcher was asking not experimenting <span />
The communist Manifesto was written by Karl Marx and by Friedrich Engels- Engels is the person you were looking for!
There is some discussion about the role of both authors in writing it, and some people suggest that Karl Marx did most of the work, with Engels having a smaller role.
The appropriate response is kinesics. It is a sort of correspondence is imparting by body development and is maybe the most understood non-verbal type of correspondence, despite the fact that it isn't the best way to converse with others without words.
When we speak with others, we take a gander at their face. This isn't a fortuitous event the same number of signs are sent with the 90-odd muscles in the face. The way the head tilts additionally changes the message.The eyes are especially vital, and when conveying we initially look to look. We at that point break and re-build up contact commonly amid the discourse.
Eyebrows and brow likewise include noteworthy signs, from amazement to dread to outrage.
The mouth, when not talking can be tightened, downturned or turned up in a grin.