Answer: A
Explanation: By putting the term and its abbreviation once, the reader will then understand what the abbreviation stands for and the writer can use it in the text without the reader being confused.
There needs to be more information is this about a book?
Answer:
It shall guarantee the rights of all workers to self-organization, collective bargaining and negotiations, and peaceful concerted activities, including the right to strike in accordance with law. They shall be entitled to security of tenure, humane conditions of work, and a living wage.