According to evolutionary theory, species that exist today are the result of a slow, continuous change of living things over time. Why is this considered to
be a theory and not a law?
O A. Evolutionary theory is a description based on observations. A law
is based on mathematical calculations.
B. Evolutionary theory may change when new evidence is found that
does not support the theory. A law has been proved with scientific
evidence.
C. Evolutionary theory is an educated guess. A law is supported by
extensive research,
D. Evolutionary theory is an explanation of how living things have
changed over time. A law describes natural events but does not
attempt to explain them.

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

answer-

the statement that f(x) = |x+a| + b has exactly one x-intercept is sometimes correct.

solution-

it solely depends on b, whether the function will have one or two or zero x intercept.

this plot of the given function, f(x) = |x+a| + b will be the basic absolute value graph i.e v shape, with vertex translated to (-a, b), instead of origin.

1-   if b is zero, the graph will have exactly one x-intercept, at x= -a

2- if b is positive, the whole graph will be above the x-axis, hence it will have no x-intercepts.

3- if b is negative, the graph will be below the x-axis, hence it will have two x-intercepts.

∴ the statement is sometimes true.