Molecule 1 on the diagram has the nitrogenous base sequence TCAAGT. Which set of bases in Molecule 2 can bond to this sequence in a
complementary way?

1.)AGTACA

2.)AGUUCA

3.)UCAAGU

4.)UCAATA

3

Explanation:

because because you need the same explanation as you take in picture

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.