Question

Scientists can use many strategies during investigations, including heldwork, surveys,

models, and experiments. Which of these phrases best describes an experiment?
A mathematical analysis of data
B. observation of animals in their natural world
Ci collection of data from an uncontrolled environment for comparative purposes
D. procedure with controlled conditions and test and outcome variables

Answer 1

An experiment is a scientific procedure in which variables are manipulated under controlled conditions to observe the effect on an outcome. There are two main types of variables in an experiment: the independent variable (manipulated) and the dependent variable (observed).

Step-by-step explanation:

In the context of scientific investigation, an experiment is best described by option D. An experiment is a procedure where scientists meticulously set-up and manipulate specific variables under controlled conditions to observe and analyze the outcomes. In an experiment, there are usually two types of variables: the independent and dependent variables. The independent variable is the factor that the experimenter manipulates or changes, while the dependent variable is the phenomenon or event that is measured or observed in response to changes in the independent variable.

Learn more about Experiment

#

Answer 2

D

Step-by-step explanation:

Question: Scientists can use many strategies during investigations, including heldwork, surveys,

models, and experiments. Which of these phrases best describes an experiment?

A mathematical analysis of data

B. observation of animals in their natural world

Ci collection of data from an uncontrolled environment for comparative purposes

D. procedure with controlled conditions and test and outcome variables