Answer:
(a)

(B)

(C)

Step-by-step explanation:
We have given 1 micrometer is called 1 micrometer
So

(A) We have given 2.4 km
We know that 1 km = 1000 m
So 2.4 km = 2400 m
As

So in 2400 m

(B) We have given 2.4 micrometer
We know that

So

As we know that 1 m = 100 cm
So

(C) We know that 1 yard = 0.9144 m
So 2.4 yard will be equal to

As

So 2.194 m
