Bruce Jenner -- Intense Question ... 'Are You Gonna Be OK?' (VIDEO)

You can feel the emotion as you watch Bruce Jenner process Diane Sawyer's interesting question, inviting Bruce to become her for a moment and fire off a question that would elicit a revealing answer.

Watch the video ... Bruce thinks for a moment -- as if he's processing the answer he'll give -- and then sounds off.

Sawyer's special should be fascinating.  It's on tonight at 9 PM ET.