Answer:
B.to stop the smuggling of goods.
Explanation:
When conducting primary research and comparing various survey methods, the least expensive method is the Online survey. This is further explained below.
<h3>What is
an Online survey?</h3>
Generally, You may gather feedback from your target audience by having them fill out a form on a website in the form of an online survey. It is possible to conduct short or lengthy surveys online.
In conclusion, When comparing the costs of different survey methodologies for primary research, the online survey consistently comes out on top.
Read more about the Online survey
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Answer:
Two ways to reduce our dependence on forest for firewood are a) use of alternative modern fuels and b) Using electricity based equipment
Explanation:
Two ways to reduce our dependence on forest for firewood are as follows -
a) Increasing the use of moderns fuels such as natural gas, kerosene, petrol and diesel instead of firewood from forest
b) Using electricity based equipment for meeting out heat and light demands rather than depending on firewood

The United States have represented form of democracy.
Thanks
Both B. and C. are in the walls.