professional development - fondamentos step 1.4 - video lesson segment 3 If you are human, leave this field blank. PRIVACY STATEMENT Your personally-identifying information and e-mail will only be used to document your work, and they will never be shared or disclosed in any way. I have finished watching segment 3 of this video lesson. no yes Section My unique ID is... always use the same unique ID... if you have forgotten, you can check your e-mail My e-mail is... a copy of your responses will be sent to you for your documentation My first name is... My last name is... How common are diphthongs in Spanish? very rare somewhat rare somewhat common very common Do you have any comments, suggestions, or questions about this segment?