Sydney notices that her gazania daisies open and close their blooms at different times of the day. she spends a year observing her flowers and records what time they open and close in her journal. she also records the temperature, the general air quality, and how light it is outside. she realizes that the flowers open with the sunrise and close with the sunset, and she concludes that the sun causes them to open and close.

what would be the best additional step that sydney should have taken to fully use the scientific inquiry process?

developing a hypothesis
sharing her results
analyzing her data
having a control group