An advantage of electron microscopes compared to light microscopes is that electron microscopes

a. are inexpensive and commonly used in most biology laboratories
b. allow you to view living cells, while light microscopes do not
c. have higher resolution that allows you to view smaller specimens
d. allow you to view the true colors of the specimens being viewed

C.have higher resolution that allows you to view smaller specimens.

An electron microscope is the outcome of advent of the technology. It utilizes electron beams to make the image of the object on a screen. It provides resolution several times higher than the light microscope. It can only be used to observe dead specimens as the energy released by the beam of electrons can kill living cells and other living specimens.

Therefore, on the basis of the above information an advantage of electron microscopes compared to light microscope is that they have higher resolution that allows you to view smaller specimens.

true, i don't really know what you're asking but from the info you provided im guessing the answer is true.

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.