81.0k views
4 votes
For what has the hot-air balloon been used? A. daily traveling B. exploring space C. weather experiments D. learning about geology

2 Answers

4 votes

Answer:

the answer is C

Step-by-step explanation:

User Alex Turbin
by
7.4k points
4 votes

Answer:D?

Step-by-step explanation:

User Moshe Levi
by
6.9k points