<em>Answer: D</em>
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<em>Explanation: The answer is D because, when you are turning the pedestrians are going to be walking towards the other side so, this means you have to stay alert for the citizens.</em>
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the obligate parasite requires strigolactones for seed germination and not karrikins. The plant secrete strigolactone from its root into the soil as mentioned. In the soil, strigolactone promotes the seed germination of the parasitic weed.
The strigolactones can be beneficial for the germination and growth of the weed plant.
I would say B is the right answer.