Explanation:

This question asks to identify the categories of persons who can be punished under Section 59 of the Rajasthan Excise Act, 1950. This requires specific knowledge of the Act's penal provisions. Let's examine the categories listed and their relevance to Section 59: Section 59 of the Rajasthan Excise Act, 1950, is titled "Penalty on druggist, chemist, apothecary or keeper of a dispensary for unlawful possession of excisable articles". This title itself clearly enumerates the specific individuals or roles targeted by this section for certain offences related to excisable articles. * **(a) Druggist:** A druggist is a person who deals in medicinal drugs. Section 59 explicitly includes 'druggist' in its scope, making them liable for unlawful possession of excisable articles. * **(b) Chemist:** A chemist, often synonymous with a pharmacist, is also involved in the preparation and sale of chemicals and medicines. Section 59 explicitly includes 'chemist' in its scope, making them liable for unlawful possession of excisable articles. * **(c) Apothecary:** An apothecary is historically a person who prepared and sold medicines and drugs. This term is also explicitly mentioned in Section 59, making apothecaries liable for unlawful possession of excisable articles. * **(d) Keeper of a dispensary:** A keeper of a dispensary is an individual responsible for the management or operation of a place where medicines are dispensed. Section 59 explicitly includes 'keeper of a dispensary' in its scope, making them liable for unlawful possession of excisable articles. Now, let's evaluate the given options based on this understanding: Option (1): "(a) and (b) only". This option is incorrect because it excludes (c) apothecary and (d) keeper of a dispensary, both of whom are explicitly covered by Section 59. Option (2): "(a), (b) and (c) only". This option is incorrect because it excludes (d) keeper of a dispensary, who is explicitly covered by Section 59. Option (3): "(b) and (c) only". This option is incorrect because it excludes (a) druggist and (d) keeper of a dispensary, both of whom are explicitly covered by Section 59. Option (4): "(a), (b), (c) and (d)". This is the correct option. As established, Section 59 of the Rajasthan Excise Act, 1950, specifically targets all four categories: druggist, chemist, apothecary, and keeper of a dispensary, for unlawful possession of excisable articles. Therefore, all of them can be punished under this section.