MUTIPLE CHOICE

read the sentence using each choice.
which one sounds correct to you?

The answer is A. but I can not understand it. what does "it"refer to?

"It" refers to the situation of "being a parent..."

'it' equals 'being the parent of a child with special needs'. Let's do a couple of paraphrases, even some rather convoluted ones should help.

... and being the parent of a child with special needs often carries extra stress for those who are the parent of a child with special needs.

... and being the parent of a child with special needs often causes extra stress for that person who is the parent of a child with special needs.

Handy little word, that 'it' is, isn't it?

Fresco beat me to the punch.

Thanks a lot，JTT! I see！

fresco and JTT both beat me to the punch.

i'm slow this a.m.

You're welcome, Graham.

Might I ask, and you certainly don't have to answer, are you a native speaker of English and what's your approximate age, pre-teen, teen, young adult, ...?

Sorry to appear so snoopy but your question just got me thinking.

not a native speaker. This is why I am puzzled. So, thanks again. Could you guess which country am I from?

China

u got it!