A scientist examines a unicellular organism and notices that its DNA is contained inside of a nucleus. What can the scientist conclude about this organism?
A. It must be a eubacterium.
B. It could be a eubacterium or archaebacterium.
C. It could be a eubacterium, archaebacterium, or protist.
D. It must be a protist.

i think its the first one

endo:

regulates body hormones, aldosterone, vasopressin

neural:

signal, regulates body using electric signals, reflex

endo has to do with hormones; aldosterone and vasopressin are both hormones. i also had this question and got it right : d

b. read the phase at the intersection of any given temperature and pressure.