What type of hypothesis is demonstrated by the following statement? "there will be no difference in the number of adverse events among clients discharged 2 days after an abdominal hysterectomy compared with clients discharged 4 days after an abdominal hysterectomy."a. nondirectional hypothesisb. directional hypothesisc. deductive hypothesisd. null hypothesis

The correct answer is option D. "Null hypothesis".

Explanation:

Null hypothesis is characterized by stating that there is no difference between the specified populations, which is the opposite of the alternative hypothesis that states that there is a difference between the populations. Since the hypothesis included in the question states that "There will be no difference in the number of adverse events...", it  is concluded that is an example of null hypothesis.

he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?