Final answer:
The noun-forming suffix you are looking for is '-ment'. It denotes a means, product, act, or state, and is commonly used to turn verbs into nouns that represent the result of the action of the verb. The correct option is c) -ment
Step-by-step explanation:
The noun-forming suffix that means 'a means; product; act; state' is the suffix -ment. An example of this in use is the word 'enjoyment', where 'enjoy' is the base verb, and by adding -ment, it turns into a noun that refers to the state of enjoying. This suffix is quite common and appears in many English words, indicating the derived noun typically represents the result of the action of the verb.
The noun-forming suffix that means 'a means; product; act; state' is -ment. When added to a base word, it forms a noun that represents the action or result of the base word. For example, the base word 'develop' combined with the suffix '-ment' forms the noun 'development'.
The correct option is c) -ment