Which of the following best explains why autonomous underwater explorers (aues) will provide revolutionary new information on ocean processes?

a.
previously there has not been a method to study small-scale ocean processes.
b.
previously there has been too much study of small-scale ocean processes.
c.
previously there has not been a method to study large-scale ocean processes.
d.
previously there has been too much study of large-scale ocean processes.

The correct answer is option A, that is, previously there has not been a method to study small-scale ocean processes.

The oceanographers are already very efficient in collecting information about the large-scale ocean procedures, but the small-scale procedures have largely been unapproachable.  

The AUEs or autonomous underwater explorers will permit the scientists to collect information regarding the small-scale and local procedures for the first time to examine ocean phenomenon with greater precision.  

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.