The underlined portion in your text appears to introduce examples of interesting Navajo word translations. To find the alternative that would NOT be acceptable, we can analyze the options:
A. For example, - This is acceptable because it directly introduces examples.
B. There are several interesting formations; - This is not acceptable as it does not specify that these are terms or translations, and it introduces ambiguity.
C. Newly developed terms included - This is acceptable as it indicates that terms are being discussed.
D. Several suggestions were - This is also acceptable, as it can lead into examples of suggestions.
Thus, the answer is:
B There are several interesting formations;