Answer:
groups of participants differing in age at the same point in time
Explanation:
Cross-sectional design: This is a type of observational study design. In this study, the investigator calculate the exposures and the outcome in study participants at the same time.
The research involves different groups of people who have different variables of interest but consists of other characteristics, for example, educational background, socioeconomic status, and ethnicity.
Answer:
posttraumatic stress disorder.
Explanation:
The posttraumatic stress disorder which is popularly known as PTSD is a kind of disorder that occur when someone is unable to to regain his or her sense back because of the bad or traumatic experience that person has witnessed before.
This is the same case with the mayor, the mayor of Springfield has probably witnessed the terrible car accident involving 25 cars that all caught on fire twenty years ago and the mayor has not recovered from the traumatic experience.
The symptoms of posttraumatic stress disorder includes flashback, fear, self-destructive behaviour, nightmares, agitation and many more.
It can be treated by using psychotherapies and through the use of medications.
Answer: Spongy
Explanation:
When a technician has noticed a clutch pedal is spongy, he should perform some preliminary checks such as checking the fluid level in the hydraulic clutch because this could be the problem most cases, once the fluid level in the hydraulic system is low the technician will experience spongy pedal, He should do this before test driving the vehicle.
