A "tool" is defined as "an instrument or device that is held by the hands and used to perform a particular task or function." Think about the tools you have used so far today. What is the most primitive tool you have used today and why? What is the most advanced tool you have used and why? *

Explanation:

The most primitive tool I used today was the hammer. The hammer is age long in the history of household tools. It is used to hit in nails into walls or woods.

The most advanced tool I have used today is the mobile phone. This is a tool of the 21st century which makes communication easier and faster.

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.