Which of the following heart block dysrhythmias is identified by a repetitious prolonging PR interval pattern after each blocked QRS complex a) first degree heart block
b) second degree heart block type I
c) second degree heart block type II
d) third degree heart block

option B is correct

Explanation:

i believe the correct answer from the choices listed above is the first option. the scientists need to look at the   validity of data, claims, hypotheses, and observations before  developing an argument. they base their arguments on facts that are present and they make sure they have proofs. 

explanation:

creative diagnostics provides a protocol for total protein extraction based on ripa which is widely used.