The answer is "none of the above".
The smooth muscle is responsible for movement of food by peristalsis and mechanical digestion by segmentation.
The answer would be C, structures A and B.
Haploid cells mean that the cells that only have half of the original chromosome number than other cells of the species. For example in human, the original chromosome number should be 46, but haploid cells only have 23 chromosomes. Haploid cells are only usually seen in reproductive cells, which means the cells used for sexual reproduction.
Since flowering plants reproduce sexually, the cells that are haploid are the sex cells. And for sex cells, they include pollen grains (male sex cell) and ovum (female sex cell). According to the picture, pollen can be found in structure B, the anther, and ovum can be found in A, the ovary.
So, your answer is C.
Continents can be made to fit together like a piece of jigsaw puzzle, also the similarity of the Atlantic coastlines of Africa and south America was also recognized so Alfred wegener in the early 1900s made a strong case for continental drift , he noted that south America, Africa,India , Antarctica, and Australia had almost identical Paleozoic rock and fossils. He then reassembled the continent to form a giant super continent which he called pangea , his reason was that the similar rocks and fossils were easier explained if the continent are joined together.
Explanation:The fossil record helped to support the idea of pangea becos these fossils were found in all 5 continent as at that time so it could only be possible if these continent were actually joined together for example the fossil remains of land-dwelling reptiles Lystrosaurus and Cynognathus are found in Triassic-age rocks on all the five continent, also the plant Glossopteris is found in Pennsylvania and Permian-age rock on all five continent