Punctuation Practice Test

At the community garden, volunteers noticed that several tomato plants were wilting even though the soil was damp. After a closer look, they found a likely cause _______ tiny insects clustered on the stems and undersides of the leaves. Which choice completes the text so that it conforms to the conventions of Standard English?​

The research team reviewed the survey results and noticed a clear pattern: participants who slept at least eight hours reported higher concentration and fewer headaches. The lead analyst summarized the finding in one sentence _______ the data suggest that consistent sleep supports both focus and well-being. Which choice completes the text so that it conforms to the conventions of Standard English?​