Answer:
A randomized experimental study
Explanation:
The experimental study is an epidemiological, analytical, prospective trial, identified by the artificial modification of the study factor by the investigator and by the randomization of the cases or subjects into two groups, called "control group" and "experimental group".
Answer:
A.
Explanation:
A.
alphabet with 22 characters
Answer: Hugh’s irritability is best categorized as a mood.
Explanation:
A mood is a transitory emotional attitude that determines how the psychological world of the person is analyzed or interpreted. Moods can endure days or weeks and are usually stable over time.
When mood states have significant alterations over time, it is considered a mood disorder. If the mood is low it is considered a depression, and when the alteration is towards a high mood it is considered a mania.
In this case, Hugh is mostly irritable, because this change has only endured a few weeks, is not yet considered a mood disorder.
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Answer: b) perceiving the question.
Explanation:
Scientific investigation is defined as analysis and research carried out through scientific method on a particular subject. Viewing and recognizing question is the first step to start investigation. Observation and testing is carried out later to produce result of investigation.
Other options are incorrect because hypothesis formation, outcome, argument preparation and finding participant involved is reach are not the initial start of scientific investigation. Thus, the correct option is option(b)