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: Active (Productive) Vocabulary and Passive (Receptive) Vocabulary.

1. Productive (Active) Vocabulary: Refers to the set of words that an individual understands and actively uses to express themselves when speaking or writing. Since speaking and writing are productive skills, the words utilized during these activities form our productive vocabulary.

2. Receptive (Passive) Vocabulary: Refers to the words that a person recognizes and understands when listening or reading, but does not necessarily use when speaking or writing.

Therefore, words that we use in writing and speaking precisely define productive vocabulary.