Hi Stacey,
i got this concept but i am little confused

. there is one Question been discussed on our forum[
https://www.beatthegmat.com/neurosecretion-t18339.html] i have picked the below question from that thread only.
Until Berta and Ernst Scharrer established the concept of neurosecretion in 1928, scientists believed that
either cells secreted hormones, which made them endocrine cells and thus part of the endocrine system, or conducted electrical impulses, in which case they were nerve cells and thus part of the nervous system.
a) either cells secreted hormones, which made them
b) either cells secreted hormones, making them
c) either cells secreted hormones and were
d) cells either secreted hormones, in which case they were
e) cells either secreted hormones, which made them
Finding answer is an easy task in this case as it is an clear example of parallelism. OA is D. however i am not understanding that whether 'they' is refering to cells or hormones? as both are plural.
So, could you please help me out.
This question is just an extension to vignesh's discussion.
Thanks