Final answer:
The synonym for 'indiscriminate' is c) 'unselective', which means lacking in selectivity and acting without careful choice, while the terms like 'selective', 'discriminating', and 'particular' are antonyms.
Step-by-step explanation:
A synonym for "indiscriminate" when used as an adjective is c) Unselective. The term indiscriminate describes a lack of selectivity, often implying a random or haphazard approach.
Therefore, when something is done indiscriminately, it is done without careful choice or distinction, making 'unselective' a synonym that captures this essence.
In contrast, 'selective' (a), 'discriminating' (b), and 'particular' (d) are antonyms of indiscriminate, as they all imply some form of careful choice or selection.
Discrimination, in another context, refers to biased thoughts against an individual or group or biased actions against an individual or group. It is important not to confuse this term with the meaning of 'indiscriminate' when seeking synonyms.