There are many types of technologies available in this era but there are certain that are just a name of another thing and is not a technology.
A log raft is not a technology and therefore it is the correct answer to the given question.
The question have four different options out of which the following three are technologies
Wooden Canoe.
Blowing Wind.
and Stone Knite.
The above mentioned are technologies and the option given below is there fore not a technology.
The option A log raft is not a technology
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