Final answer:
The most firmly based inference from the given facts is that baseball may not survive as a sport if current trends continue.
Step-by-step explanation:
Answer:
The subject of this question is Social Studies and it is at a High School level. The given facts state that baseball was the most popular sport in America until the 1960s, but its popularity has declined significantly since then. Currently, baseball appeals primarily to people over 55, while younger viewers prefer sports that are more fast-paced. Based on these facts, the most firmly based inference is that if current trends continue, baseball may not survive as a sport.
Learn more about Baseball's declining popularity in America