Here is a diagram, hope this helps :)
Homologous structures can be best described as structures that are so similar that they imply a common ancestor.
Homologous structures are structures that can be found in different species and are similar in structure but may not necessarily have similar function. The presence of these similar structures indicates that the species evolve from a common ancestor. Examples of homologous structures are the forelimbs of bats and humans which have different functions but the same basic skeletal structure. This suggests that bats and humans share a common ancestor.
C. Sugar Out of these answers Sugar is the inly one that dissolves in water. Carbon dioxide is a gas and cant dissolve, Vinegar is a liquid and cant dissolve, Sugar is a dissolving food.
C: chimpanzee we share more traits with monkeys, therefore the answer is chimpanzee.