(1) The Authority shall have, in addition to the functions assigned to it by any other provision of this Act or of any other enactment, the following functions:
(a) to study and analyse any practice or method of competition affecting the supply and distribution of goods or the provision of services or any other matter relating to competition (which may consist of, or include, a study or analysis of any development outside the State);
(b) to carry out an investigation, either on its own initiative or in response to a complaint made to it by any person, into any breach of this Act that may be occurring or has occurred;
(c) to advise the Government, Ministers of the Government and Ministers of State concerning the implications for competition in markets for goods and services of proposals for legislation (including any instruments to be made under any enactment);
(d) to publish notices containing practical guidance as to how the provisions of this Act may be complied with;
(e) to adv