<u>Answer:</u>
This observation is most consistent with the sensory exploitation hypothesis.
Option: (C)
<u>Explanation:</u>
- The 'sensory exploitation hypothesis' states that the male sexual characters as adaptations are to exploit female reaction that is developed in non-sexual contexts.
- As we see the example in the case of female platy fishes, how they prefer the male fish having the artificial sword like structures that are attached to their tails.
- Sensory exploitation is a sensory bias that is applied to gain the probability of having better reproductive success.
Answer:
C. Varieties of an element that differ only in the number of neutrons are called isotopes.
Explanation:
The Earth is approximately 
old. The solar system formed from giant gas clouds which was a part of the solar nebula.
The surface of soil which demarcates two soils of different geological ages is called a unconformity.
Palesol is the soil that lies between sediments or volcanic deposits. If the paleosol is older they have lithified rock.
Hence, option C is true.
D.India experienced political unrest for many years
Native Americans settled in different regions of the country.
The pull factors that attracted European Jews to Eastern Europe during the late Middle Ages were that Jews were attracted to Eastern Europe because they could practice Judaism there without any persecution.
So A.
