Answer:
Wednesday
Step-by-step explanation:
The given daily temperature in New York from Monday to Thursday:
Monday: [tex]1^{\circ}C[/tex]
Tuesday: [tex]2^{\circ}C[/tex]
Wednesday: [tex]5^{\circ}C[/tex]
Thursday: [tex]-1^{\circ}C[/tex]
Now, among the given temperatures,[tex]1^{\circ}C, 2^{\circ}C, 5^{\circ}C,[/tex] and [tex]-1^{\circ}C,[/tex] the highest temperature is [tex]5^{\circ}C[/tex].
As the day having the highest temperature is the warmest day which is Wednesday.
So, on Wednesday the temperature was warmest.