Answer:
Kung hindi tayo marunong magpahalaga at mangalaga sa mga sinaunang kabihasnan sa daigdig ay maaaring masira at mawala ang mga ito sa atin.
It was to watch how impressionable children acted on a weighted doll after a adult acted aggressively towards it and to see if hey acted the same way towards it
I would say the answer would be D)
because back then in the 20’s it was politically correct and acceptable to target particular ethnic groups from being able to migrate to your country.
All of the other immigration acts have occurred within the last 50 years or so when it would NOT be acceptable to enforce this kind of exclusion.
hope this helps!