The correct answer is: Blood is slightly alkaline.
Blood has a pH of 7.35-7.45, which is slightly higher than neutral (pH 7.0). This is because blood contains a number of buffers, which are substances that help to keep the pH of blood stable. Buffers work by absorbing or releasing hydrogen ions, which can cause the pH of blood to change.
If the pH of blood falls too low, it can lead to a condition called acidosis. Acidosis can cause a number of problems, including fatigue, confusion, and seizures. If the pH of blood rises too high, it can lead to a condition called alkalosis. Alkalosis can also cause a number of problems, including muscle cramps, nausea, and vomiting.
It is important to maintain a healthy pH balance in blood. This can be done by eating a balanced diet, getting regular exercise, and avoiding excessive alcohol consumption.