Answer:
Fearfulness
Explanation:
Literally, the word "horror" and any of its synonyms are used to represent and to depict fear.
From the list of given options, suspense, anticipation and resignation do not mean fear in the actual sense and cannot be used as a substitute to horror(s).
The only option that represents fear is "H. fearfulness".
Hence, fearfulness answers the question
Its a dialogue between to friends about increasing population, thats all
Baltic-Slavic languages include Latvian and Lithuanian, which are spoken (of course) in Latvia and Lithuania. Those countries are located on the Baltic Sea in northern Europe, sort of smashed between Scandinavia, Russia, and Poland.