The statement above is based on the assumption that improved labour standards, economic achievement and social security are not always possible. The correct option is A. It can be seen from the passage that the collaboration of all countries is needed in order to secure for all improved standards, economic achievement and social security; which means that without collaboration, these things will not be achievable.
The small excerpt mentions the fullest collaboration for the sole purpose of the world economy considering the labor standards and social security. These two goals are given in the last option of the question. The correct answer is D. All other options do not contain proper information presented in the question.
