The advantages of vascular tissue over non vascular tissue are evident in

a. whether organisms have alternation of generations
b. an organism's size and complexity
c. the number of individual offspring produced by each organism
d. all of the above

The answer is for sure "B", based upon logic and common sense. 

A bacteria for example are only capable of diffusing nutrients through their walls, which is easy to do for a one celled organism, but would be very difficult with a multi cell organism. And we can safely ignore the other two options because a bacteria is just as capable of reproducing itself without vascular, in fact doing it with very efficiently. 

The main role of dna in the  cell is the long-term storage of information. it is often compared to a blueprint, since it contains the instructions to construct other components of the  cell, such as  proteins  and rna molecules.the main function of rna is to carry information of amino acid sequence from the genes to where  proteins  are assembled on  ribosomes  in the  cytoplasm. mark brainliest, my work is good.