What is productive vocabulary ?

The correct option is: Words that we use in writing and speaking.

Explanation:

Vocabulary is broadly divided into two main categories: Receptive (or Passive) Vocabulary and Productive (or Active) Vocabulary.

1. Productive Vocabulary: These are the words that an individual understands and can actively produce or use to express thoughts and ideas through speaking and writing.

2. Receptive Vocabulary: These are the words that an individual understands when hearing or reading them, but may not necessarily use when speaking or writing.

Therefore, productive vocabulary specifically refers to the words that we actively use in writing and speaking.