What do all plant life cycles have in common?
a) fertilization produces seeds.
b) sperm cells are carried by the wind to egg cells.
c) diploid and haploid phases alternate.
d) sporophytes are formed by meiosis.

C

Explanation:

Ranging from lower plants (bryophyte and pteridophytes) to higher ones (flowering plants), they all exhibit the alternation of generations during the reproductive phase of their life cycle.

The haploid gametophyte produces the haploid male and female gametes, which fuses to form the diploid zygote. This zygote develops into sporophyte (spore-producing) in lower plants or fruit (seed-bearing) in higher plants.

Considering other options,

B) not all plants use wind as their method of dispersal

D) not all plants possess spores-producing sporophyte, some bear seeds instead

A) not all plant's fertilization results in production of seeds, some produce spores