Which sentence sounds more serious?

Select the text where the author's tone is negative:

Select the text where the author's tone is positive:

Select the text where the author's tone is negative:

Select the text where the author's tone is positive:

Select the text where the author's tone is negative:

Select the text where the author's tone is positive:

Select the text where the author's tone is positive:

The tranquil waters of the lake reflected the soft moonlight like glass.

Select the tone of the text:

The glassy water reflected the sinister moonlight. The long shadows of trees reached ominously across the lake.

Select the tone of the text:

I stepped into the blinding stage light. My heart was racing and I felt nauseous.

Select the tone of the text:

I stepped in front of the exhilarating stage lights. My heart leapt with excitement as I heard the enlivening sound of applause.

Select the tone of the text: