You are standing outside during the daytime. How can you see a blade of grass? A. Light is produced by your eyes and travels out to the grass.
B. Light is produced by the grass and travels straight to your eyes.
C. Light travels from the Sun to the grass and is then reflected to your eyes.
D. Light travels from the Sun to the grass and then bounces off the sky to your eyes.

C: Light travels from the Sun to the grass and is then reflected to your eyes.

Explanation:

Our eyes don't produce light but detect light (so answer A is not correct)

The grass doesn't produce light unless it is burning (discard answer B)

Answer C is the correct one.

The light we detect from the grass is not light bounced off the sky, it comes directly from the grass to your eyes (you are not looking at the sky when you see the grass) Discard answer D

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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the five characteristics of adolescence are biological growth and development, and undefined status, increased decision making, increased pressure and the search of self.