Consider the following activities: (1)Spraying pesticides

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Consider the following activities:

(1)Spraying pesticides on a crop field

(2)Inspecting the craters of active volcanoes

(3)Collecting breath samples from spouting whales for DNA analysis

At the present level of technology, which of the above activities can be successfully carried out by using drones?

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(3) ????? ???????? ?? ??? ????? ????? ?? ???? ?? ????? ????? ????

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[UPSC CSE PRE 2020]

A 1 and 2 only

केवल 1 और 2

B )2 and 3 only

2 और 3 ही

C 1 and 3 only

केवल 1 और 3

D 1, 2 and 3

1, 2 और 3

Answer: (d) Explanation: Drones are already well known to spread pesticide...

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