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* PARALLELISM ISSUE (2 THINGS)1) [ME PARAPHRASING]: Either cells secreting hormones making them.
OR (needed b/c of "either" in first condition)
2) conducted electrical impulses, [in which case they were nerve cells and thus part of the nervous system]
> FIRST PART MUST MATCH THIS LANGUAGE!* KEY: ELECTRICAL IMPULSES, IN WHICH --> MEANS THE ANSWER MUST BE "D".
> D = CORRECT B/C "SECRETED HORMONES, IN WHICH"
Kudos please if you find this helpful