Within a gymnosperm megasporangium, what is the correct sequence in which the following should appear during development, assuming that fertilization occurs?
1. sporophyte embryo
2. female gametophyte
3. egg cell
4. megaspore
a) 1 → 4 → 3 → 2
b) 1 → 4 → 2 → 3
c) 4 → 2 → 3 → 1
d) 4 → 1 → 2 → 3
e) 4 → 3 → 2 → 1
Answer: C