Answer:
Pay attention in your class.
Explanation:
If you paid attention in your class, you would have at least a basic understanding of the material.
Option c is answer because most of us are literature in English
Answer:
200 nm
Explanation:
We need a constructive interference to see the bright reflection
we know that
where m=1 and
is the wavelength of the gasoline
so 
putting the value of m and
in thickness equation

so the thickness of the film will be 200 nm
The interactive model of communication states that the people and the environment for communication are constantly changing.
B. interactive
<u>Explanation:</u>
The world is a big place and you must have come across the infamous hearing, "Change is the only constant". Gradually, with the passage of time, the mindset of the people change over a certain topic for communication.
For instance, in old times, people did not prefer their children to have love marriages, in fact India has also seen honor killings to prevent love marriages. But now most portion of the society stands in favor of love marriages. People change, perspective change, and so does the perception and ideas.
the answer is virus scanner which is not hardware but software because if you didn't know hardware is stuff like a monitor a mouse a battery a case that's all stuff you can generally touch even the hardware inside the computer you can touch where as virus scanner you can not touch because its software again my point being its software NOT hardware