Ascientist hypothesized that one species of dinosaur was the ancestor of a later species of dinosaur. she then found fossil evidence in several places that this was so. why can't her hypothesis become a scientific theory at this point?
answer
a scientific theory explains a wide range of phenomena, and this does not.
she needs to test her hypothesis further before it can become a theory.
the hypothesis cannot become a scientific theory until it is published in a scientific journal.
too much evidence has accumulated supporting her hypothesis for it to be called a theory.

The correct answer is option A, A scientific theory explains a wide range of phenomena, and this does not.

Reason -

A scientific theory is basically an explanation for a wide range of phenomena. Also a hypothesis is just an educated guess of some finding which is based on the past observation. A scientific theory is more tested and proven level of an observation that affects a large set of sphere where as a hypothesis is more sort of directed and limited guess.

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.