The invention of the microscope is the answer.
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Answer: Second
Explanation:
Second trimester is the period of gestation which extends from 13 to 27 weeks of pregnancy. The following are the points of development that occur in a fetus.
1. Development of lanugo: By the end of 16 week the fetus develops fine hair all over the body called as lanugo.
2.The fetus move and kick: By around 21 week the mother may feel kicks this is because the fetus develop the newly coordinated arms and legs.
3. The fetal position: By the end of second trimester the fetus develops a weight around 2 pounds this helps in determining the position of the fetus inside the mother's belly.
Answer:
As per the data provided, the correct answer would be cherries.
The effect of any food in increasing the blood sugar level can be understood with the help of glycemic load. It takes in the account of both the glycemic index as well as serving size.
It states that the glycemic response of our body depends on both "the type of carbohydrate and the amount of carbohydrate" consumed in a meal.
For example, glycemic response of small size high GI food is the same as that of large size low GI food.
It can be calculated as follows:

Hence, glycemic load of apple would be = (38 x 17)/100 = 6.4.
Similarly, glycemic load of cherries, oranges, and watermelons would be 4.18, 10, 8.6 respectively.
Hence, cherries are the fruit which has low glycemic load value of 4.18. So, the glycemic response of this fruit would be low. Hence, it will result increase the blood sugar by the least value.
Kidney preserve or excrete H⁺ ion and HCO₃⁻ ion to regulate the blood pH.