Https://foreignpolicy.com/2015/10/05/irans-identity-crisis/
The correct answer is - E.) to increase national sovereignty.
By cooperation on regional or global level the states do not, and can not really do anything about increasing the national sovereignty. The reason for that is that the national sovereignty is the matter of the state itself, its politics, policies, and handling of the situations in the country. The other countries with whom the state cooperates have nothing to do with it, nor it is their place to interfere in the national sovereignty of the other states, be it friendly states or not.
The most likely toxic chemicals that is found in baby bottles is called BPA. If high doses of this chemical is consumed, it might shut down the response system of estrogen in the babies. It could also possibly change the babies ability of producing ordinary thyroid hormones.
Law makers can address this possibility by making a law that bans the creation of a baby bottles plastic that contains these toxic chemicals. This provides with a strict interpretation of the precautionary principle because it is ‘banning’ all the bottles plastic that contains toxic chemicals. Banning is a strict interpretation.
Law makers can also make a law that limits the doses of this toxic chemical that can be found in the bottles plastic. This is a strict interpretation because there is a limit, and if the producers go above the limit, there is consequences to face.