Answer: Anything above the pH level of 7.0
The term yardstick refers to what is a normal response. It really has nothing to do with a yardstick and can be used in many situations. A yardstick is a measurement that has been tested over and over and than that measurement becomes the standard.
Say the yardstick for a reaction time is 5 seconds
Meaning that is what a normal healthy person can do it in.
Joan has the reaction in 4.8 second. Well she is on the the bell curve and did better than the yardstick test measure.
Fewer job opportunities for the mother, unfortunately, especially if she is pregnant, because people judge, and they won't think she is responsible since she is underage and with child. With the father, it's not like they'll know right away, and they can just walk away and not be bothered with the subject again, while the mother will have to find a job and either manage to balance school, or drop out. The parents don't have to do anything, but they can support there children, but it's still not going to affect if they get job offerings or not.
From the description of the food that the doctor is advising Natalia to start consuming, it is clear that she is suffering from (C) Vitamin D deficiency.
Someone with a vitamin D deficiency would be at risk of rickets, an illness where someone will have skeletal deformities due to soft bones. Increased risk of death due to cardiovascular disease and cancer is also associated with someone who has a vitamin D deficiency.