One benefit of being a large organism is that you have
a. larger cells. c. simpler functions.
b. fewer problems. d. only one kind of cell.
There are several benefits of being a large organism, but none of them are listed among the four choices. Lets look at them one by one.
a) large cells: its true that eukaryotic cells are larger in size as compared to prokaryotic cells. Eukaryotic cells make up large organisms (such as animals and plants), whereas the prokaryotic cells make up single celled organisms (Such as bacteria). However, the cell size does not generally increase as the organisms become larger. Cells have to exchange material (nutrients, waste, etc.) with their surroundings and larger size means more energy consumption for such efforts. Hence, larger organisms do not necessarily have larger cells.
b) Fewer Problems: in fact, the larger the organisms become, (generally) so do their problems. Larger organisms have to deal with higher energy requirements, higher evaporation (due to larger surface area), etc.
c) Simpler functions: Larger organisms actually carry out more complex functions than smaller organisms. For example, we walk on two limbs, have to think, learn how to speak, etc. In comparison, lower life forms, say a snail does not have to worry about going to college and finding employment (though they still have to arrange food, etc.).
d) Only one kind of cells: larger organisms actually contain a multitude of cells for carrying out various functions. For example, we have red blood cells, white blood cells, nerve cells, skin cells, etc. In comparison, a bacteria is only one cell.
Hope this helps.