Question

ANswer this question pls

Answer 1

Answer:

Option 3 will be preferable.

Explanation:

Because, we need to prove that, factory is causing pollution not the sewage treatment plant, so we need to compare the values of both factory as well as sewage treatment plant.

if we take sample at P & Q, it will tell us that factory is causing problem.

also, when we take sample at R & S, It will tell us that sewage treatment is not causing any problem to the villagers.

hence,

at points, P, Q, R & S we can conclude that water to the village is getting polluted because of only factory not because of sewage treatment plant.

so option 3 is the right answer.

Answer 2

Answer:

Answer is

only at point Q

explaination

because we have to proof factory is polluting so

if we take option 2 then it will say that fatory is not polluting the river water itself is polluted as point p is river water

if we take option 3 then it will say river, favtory and sewage all of them polluted the water as option p q rs are in river factory sewage respectively

if we take option 4 then it say all of them including river water which is in nearby village

is polluted

so option 1 which is only at point q brcause it is clear from the diagram that ii is only point where factory is located and nothing is pollutes it exept factory so we will clearly proof that