Answer: Here's my answer, sorry if its detailed.
Step-by-step explanation:
In the eclipse plot, if there is an Earth-like planet, it causes a significant dip in the normalized flux values (Option 1).
The dip represents the decrease in the observed brightness of the star when the planet passes in front of it during an eclipse. As the planet blocks a portion of the star's light, the flux values recorded by the telescope decrease. This dip is significant because it indicates the presence of a planet with a size and position that causes a noticeable reduction in the star's brightness.
This dip in the normalized flux values can be used to determine various properties of the planet, such as its size, orbital period, and distance from the star. Scientists analyze the depth and duration of the dip to gather information about the planet's characteristics and its potential habitability.
Therefore, in the eclipse plot, the presence of an Earth-like planet causes a significant dip in the normalized flux values.