Your answer is d, because the man was speaking for himself :)
A semicolons NEVER should be used to try to create a "pause" longer than that achieved by a comma. If you can use a period correctly, then you can use a semicolon correctly. A semicolon is used just like a period, but it is used to separate two complete sentences when the sentences are closely related in meaning.
Answer:
sporadic, irregular, fitful, spasmodic, broken, fragmentary, discontinuous, disconnected, isolated, odd, random, patchy, scattered.
Explanation:
Synonyms of intermittent
Please let me know if you need anymore help
Good Luck! :)