Step-by-step explanation: just answered it on APEX
A.Placing different groups of people in different colored rooms and recording their mood
An observational study is a study in which a researcher just records behavior in a particular manner without interfering with the behavior.
In this study, the researcher has no influence or control over the variables .
From the given options , only option A representing a situation which can be an example of observational study."Placing different groups of people in different colored rooms and recording their mood "
Here the researcher just recording the mood of people without any influence.
i hope this , i don't know if you're looking for a pair or not.
the correct answer is a) they believe they have a "just cause."
islamic terrorists justify their violent actions because they believe they have a "just cause."
every act of terrorism of islamic sects is done “in the name of allah”. that justifies their actions. islam people who commit those terrorist attacks are not afraid to die. that is why the attacks have horrible consequences. they know they are going to die and they are proud to do it because it is in the name of allah, so it is justified and is for a “good cause.”
since the very beginning of the conflict with israel, islam is fighting a “sacred war”, respecting the words stated in the qur’an. they fight against the domination of the western countries and to defend their occupied territories.