Question

practice it! select the question(s) that would help determine the type of investigation needed. are you comparing something? what protective gear is needed to conduct this investigation? do you need a controlled setting to perform the investigation? can you control the variables in the problem? does the time of day affect your investigation?

Explanation:

To determine the type of investigation (experimental, comparative, observational, etc.), questions related to comparison, control of variables, and controlled settings are relevant:

• "Are you comparing something?" helps identify if it's a comparative investigation.
• "Do you need a controlled setting to perform the investigation?" and "Can you control the variables in the problem?" relate to experimental investigations (where variables are controlled).

Questions like "What protective gear is needed..." (about safety, not investigation type) and "Does the time of day affect..." (a specific variable’s effect, not the investigation type’s determination) are less relevant for determining the investigation type.

So the questions that help determine the investigation type are:

• Are you comparing something?
• Do you need a controlled setting to perform the investigation?
• Can you control the variables in the problem?

Answer:

• Are you comparing something?
• Do you need a controlled setting to perform the investigation?
• Can you control the variables in the problem?