The MOST appropriate age of a child who helps to undress; puts 3 words together (subject, verb, object); and handles spoon well is

The MOST appropriate age of a child who helps to undress; puts 3 words together (subject, verb, object); and handles spoon well is

Laboratory confirmation of the diagnosis in Question 1 can best be obtained by measuring the toxic compound's concentration in which of the following?

A 15-month-old toddler was able to do all the following EXCEPT

You are assigned to evaluate the outcome of fecal occult blood test as a screening test for patients with bowel cancer. The total number of patients who underwent the test is 2030; in those whom the disease is confirmed are 30. The results of fecal occult blood test are as follows: in 20 patients who has a confirmed bowel cancer (truly positive), and in 180 patients who don't have the disease (falsely positive); in 10 patients who truly has the disease (falsely negative), and in 1820 patients who are not affected by the disease (truly negative). All the following statements are true EXCEPT

A medical student observes that infants cry in response to another infant's cry. The MOST appropriate answer is that it represents