Correct Answer: D
Explanation:
The last sentence states that new technologies
are reported daily, and this implies that new
technologies are being constantly developed.
There is no support for choice a.With regard to
choice b, stone tools were first used two and a
half million years ago, but they were not necessarily
in use all that time. Choice c is clearly
wrong since the paragraph states when stone
tools first came into use. Although some may
agree that choice e is true, the author of the
paragraph does not give support for this
opinion.