In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

Q: Question: What WISC IV tests are part of the perceptual reasoning index ?: 
 Options:  <1> Search for symbols, cubes and digits. <2> Matrices, cubes and concepts. <3> Search for symbols, letters and numbers, and concepts. <4> Matrices, keys and concepts. <5> Cubes, letters and numbers, and concepts.

A: 2
****
Q: Question: Stimulates the separation of DNA strands during replication: 
 Options:  <1> Primasa <2> DNA ligase. <3> The single chain DNA binding proteins. <4> Helicasa <5> DNA polymerase I.

A: 4
****
Q: Question: An unknown enzyme that affects DNA has been isolated from E. coli. When a solution of this enzyme is mixed with supercoiled plasmid DNA, its only effect is to relax DNA. At the end of the exposure to the enzyme solution, the plasmid DNA is covalently closed and is still circular. This enzyme is one: 
 Options:  <1> Restriction endonuclease. <2> Primasa <3> Reverse transcriptase <4> Helicasa <5> Topoisomerase

A:
5
****