The protective barrier that prevents or restricts entry of toxins ...

[Garrulous]

The protective barrier that prevents or restricts entry of toxins from the bloodstream to the brain doesn't mature until the child is ______of age.
 
  a. 4 months
 b. 6 months
 c. 1 year
 d. 18 months

Question 2

Large blocks, crayons, and puzzles are suggested as age appropriate for children of age
 
  a. 6 months to 1 year.
 b. 1 year to 18 months.
  c. 18 months to 3 years.
  d. 3 years to 6 years.

[wuly]

Answer to Question 1

c

Answer to Question 2

c

[Garrulous]

Great answer, keep it coming

[tkempin]

Thanks for the timely response, appreciate it