Which of the following gives sexual reproduction an advantage over asexual reproduction?
a. sexual reproduction often requires two parents to be present.
b. sexual reproduction increases genetic diversity.
c. sexual reproduction produces genetically identical offspring.
d. sexual reproduction happens more quickly than asexual reproduction

In letter A, obviously sexual reproduction requires to parent to produce an offspring.
in letter C, it's asexual instead of sexual reproduction. in asexual reproduction the offspring is identical to its parent.

in letter D, it is also asexual instead of sexual reproduction.

so the best answer is letter B, it genetically produce identical offspring.

Wetlands form where water and land meet. a lake with a wetland fringe can fill in with decayed plant and animal material to become a wet meadow. a pond can fill in to become a bog or fen. sediment can fill in a river marsh to become a swamp.flooding of coastal lowlands from rising sea levels has created broad coastal marshes that are protected from wave action by barrier islands or reefs. coastal wetlands also form when rivers deposit sediment as they reach the ocean. plants then take root and hold the soil firm against the forces of tides and waves.