Answer:
1. Option D. 2. Option A.
Explanation:
1. Every individual has some unique characteristics and therefore, their ability to think and interpret things is different from each other. Hence, every individual concludes things on the basis of his/her own experiences, thinking, thoughts, etc.
Therefore, when two scientists get different results while studying the evolution of the universe then it is likely that they will get different results because both of them will have their own style of identification, hypothesizing things, or situations.
Thus, we can conclude that the two groups of scientists got different results because they had different specialties and interpreted their data differently.
2. It is the Chandrasekhar limit which gives an idea about the formation of the white dwarf, neutron star, or black hole at the last stage of a dying star.
The Chandrasekhar limit is equal to 1.4 solar masses.
As per the Chandrasekhar limit, if the mass of the dying star is less than 1.4 solar mass, then it will become a white dwarf.
If the mass of the dying star is greater than 1.4 solar mass, then a neutron star or black hole is formed.
Hence, the correct answer to this question is mass.
