maseryou

我觉得，首先，Which指代the Aramaic script，为避免修饰不清，优选“with it the Aramaic script”结构，
然后，根据逻辑意思，应该是both the northern and the southern India alphabets derive from the Aramaic script,后半部分倒装


A选项的话，which指代it，逻辑意思不对
而且A的结构为derive A from B,A was derived from B,这里A为复数名词，所以应该改为were.


而且朗文字典上：对于derive 的用法
derive：
1 [T] to get something, usually a pleasant feeling, from something or someone。(derive及物动词的时候，一般指的是feeling)
derive sth from: He derived some comfort from the fact that he wasn't the only one to fail the exam.
2 [I] to develop or come from something else（起源，由。。而来）
[+ from] This word is derived from Latin.