Discussion

Explanation:

Going by the cases in the option for the five days :

Day 1 : (Opening price, Closing Price ) :  (2365, 2395)

Day 2 : (Opening price, Closing Price ) : ( 2395, 2425 )

Day 6 : (Opening price, Closing Price ) : ( Closing price is lower than the opening price )

Day 7 : (Opening price, Closing Price ) : ( Closing price is lower than the opening price )

Day 10 : (Opening price, Closing Price ) : (2277.5, 2292.5)

The percentage increase for day 1 : $\frac{\left(2395-2365\right)}{\left(2365\right)}$ . 100 = 1.26%

The percentage increase for day 2 : $\frac{(2425-2395)}{\left(2395\right)}$ . 100 = 1.252%

The percentage increase for day 10 : $\frac{(2492.5-2377.5)}{(2377.5)}$ . 100 = 0.65%

Hence Day 1 is the highest

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