An adaptation is..
A a trait bred by humans.
Ba trait that helps an organism survive,
c
a trait that causes an organism to die.
D
a trait that is related to the weather,

The answer should be B, a trait that helps an organism survive.

Explanation:

i won't lie i don't know so go online and ask google thats what i do

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.