1 and 2 1 and 2 1 and 2 1 and 2 1 and 2
The following must occur before an <u>underage individual</u> can participate in the research study:
- the parent/legal guardian must give permission for the minor to participate.
- the minor must agree to participate in the research.
<h3>What is a research study?</h3>
This refers to the systematic, rigorous and critical investigation that aims to answer questions.
Any research participant that is above 18 years is considered a non-minor and can participate in any kind of research study without seeking consent from guardians/parents.
Read more about research study
brainly.com/question/968894
#SPJ1
Answer:
Rifling stands for the spiral grooves in the gun put by the manufacturer. And the two types of markings are the grooves land on the bullet.It is the process of figuring out the distance between the gun and its target. And it is done by looking at the patterns of the shot and the gun remainings.
Explanation:
Please mark as brainliest
