I do surveys for a survey company (yougov.com), the following was a followup question to the main survey. My answer was c. I'm not sure if I am mad about the 20% for a, or happy that it was not larger. I saw the 29% for e as very positive.
When is it appropriate to change the pronoun you use to refer to a transgender person from his or her birth gender to her or his new gender identity?
a) Never 20%
b) After gender reassignment surgery 12%
c) Once the person exhibits the public appearance of a given gender 8%
d) Once the person begins any medical treatment 4%
e) As soon as the person identifies as transgender 29%
f) Not sure 26%
All US adults, 06/01/15