Question

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ashley conducts an investigation on the effects of water amounts on seed sprouting. she knows that repeating her experiment is important for the quality of the investigation.
how can ashley determine if her investigation steps included repetition?
she performs multiple trials using the same procedures and conditions.
she compares her results with those of other students doing the same experiment.
she changes the type of seed used in each trial.
she asks a different team to conduct the experiment.

Explanation:

Repetition in an experiment means performing the same experiment multiple times under identical conditions. This helps in validating results and reducing errors. Performing multiple trials with the same procedures and conditions is repetition. Comparing with others is replication, changing seeds and asking another team are not repetition.

Answer:

She performs multiple trials using the same procedures and conditions.