Solution a is the most acidic.
In a pH scale of 1 to 14, the smaller the pH is, the more acidic is. In opposite, the higher the pH is, the more alkaline it is. We call substances with pH below 7 as acid, and above 7 as alkali, while 7 as neutral.
Therefore, comparing the 4 solutions, solution a has the lowest pH, 3, so it is the most acidic.
The quantity of water in the water table can change rapidly depending on the rate of extraction. As the level of water decreases in the aquifer, there is less available water to be pumped. If the rate of potential groundwater recharge is less than the rate of extraction, the water table will be too low for access.
The correct answer is "ineffective low performance related to migraine headaches".
According to the patient's description, migraine headaches are creating a serious problem regarding her ability to perform all the actions that her role in her family involves. Her role as a grandmother involves taking care of her grandchildren and keeping up her garden as a hobby. These are actions which she can no longer perform due to her headaches.
Space, is what i would guess.
