Which harmony is the most appropriate for the measure?

ANSWER

The measure consists of C, E, G and B, making a dominant 7th chord. This dominant 7th chord is leading to iv in the following measure. The harmony in the measure can be analyzed either separately or altogether. Correct answer is 4.
Which harmony is the most appropriate for the measure?
ANSWER
The measure consists of C, E, G and B, making a dominant 7th chord. This dominant 7th chord is leading to iv in the following measure. The harmony in the measure can be analyzed either separately or altogether. Correct answer is 4.