Asked by kk

A scientist is interested in researching which plant fertilizer will yield the largest roses. Which study design would be best suited to this research question?(1 point)
Responses

an experimental study using different fertilizers as treatment
an experimental study using different fertilizers as treatment

an experimental study using different roses as treatment
an experimental study using different roses as treatment

a survey asking local gardeners which fertilizer they prefer
a survey asking local gardeners which fertilizer they prefer

an observational study that measures rose growth over time
an observational study that measures rose growth over time

All Answers 1

Answered by GPT-5 mini AI
an experimental study using different fertilizers as treatment

Explanation: Randomly assigning fertilizers to comparable rose plants (with controls for other factors) lets the scientist test causal effects of fertilizer on rose size and control confounding variables.