What is oral vocabulary primarily concerned with?

Oral vocabulary is primarily concerned with the words that individuals use while speaking and the words they recognize when listening. This aspect of vocabulary refers to the ability to understand and effectively communicate using spoken language. A strong oral vocabulary is essential for effective verbal communication, comprehension of spoken language, and interaction in everyday conversations.

In contrast, the other options focus on different aspects of vocabulary. For instance, recognizing words in print relates to reading vocabulary, which involves understanding words when they are written. Similarly, words used in written communication point towards written vocabulary, emphasizing the vocabulary utilized when writing. Lastly, vocabulary used in professional settings typically pertains to specialized terminology and jargon relevant to specific careers or fields, which is a more limited subset of general vocabulary. These distinctions clarify why the correct choice highlights the spoken and listened aspects of vocabulary.