Select the correct answer.
read this summary of a scientific theory:

the universe began in an incredibly hot and dense state about 13.8 billion years ago. since this time, it has been rapidly expanding, causing galaxies to move away from one another. energy in the coldest depths of space can be explained as radiation left behind from the universe's early, more energetic state.

which of the following would require this theory to be modified?

a.
scientific observations are made that show the coldest depths of space actually lack any leftover radiation.
b.
the public becomes aware that the theory cannot accurately be regarded as a scientific law.
c.
a popular religious leader puts forward an alternative idea that does not account for all of the available evidence.
d.
a prominent scientist uses the hypothesis that the universe is much older to guide a scientific investigation.

D.  A prominent scientist uses the hypothesis that the universe is much older to guide a scientific investigation.

Explanation:

The scientific theory is the proposed description for the cause of a natural process. It is supported by the evidences that are the outcomes of the experimental trials.

A scientific theory can be modified by conducting the research using different methodology, technology and by molding the research question or hypothesis slightly different from previous research.

According to the situation, the scientific theory related to the primitive universe has given. Certain facts are available related to universe. Thus a hypothesis can be framed so as to prove the scientific theory by conducting the scientific investigation involving experimental trials. The results should be valid to be inclusive in modifying a theory.

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if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.