Answer:
Wednesday
Explanation:
The given daily temperature in New York from Monday to Thursday:
Monday:
![1^(\circ)C](https://img.qammunity.org/2021/formulas/mathematics/high-school/jvtvcblrlube4suuen8ej30isvvdrqj464.png)
Tuesday:
![2^(\circ)C](https://img.qammunity.org/2021/formulas/mathematics/high-school/xvwwxzhoriw49g7i9hui3ags0h6yisvz1c.png)
Wednesday:
![5^(\circ)C](https://img.qammunity.org/2021/formulas/mathematics/high-school/o31hguualok0qaknuyh5ipq2wxxmkvhcvt.png)
Thursday:
![-1^(\circ)C](https://img.qammunity.org/2021/formulas/mathematics/high-school/fm2bm3nk5tpn1dvgop3oclhme9741ahtmu.png)
Now, among the given temperatures,
and
the highest temperature is
.
As the day having the highest temperature is the warmest day which is Wednesday.
So, on Wednesday the temperature was warmest.