Finally a new moderator. Keep this forum neat, ok?
(a) Yes, extremely common, but for some reason I don't apply it to every case, because I wouldn't use it in "That yellow dress". I would use a glottal stop there, "Tha? yellow dress".
(b) Same here. I would never use it in "He said yes", I don't know why.
(c) There are some mistakes here. In "As you know" and "This is your seat" the sound is /z/, so these examples should go in (d).
(d) Alright here.
(a) Yes, extremely common, but for some reason I don't apply it to every case, because I wouldn't use it in "That yellow dress". I would use a glottal stop there, "Tha? yellow dress".
(b) Same here. I would never use it in "He said yes", I don't know why.
(c) There are some mistakes here. In "As you know" and "This is your seat" the sound is /z/, so these examples should go in (d).
(d) Alright here.