Which sentence would best fit at the beginning of a first paragraph and would also make the best topic sentence?
a.
these hot springs are quite different from thermal areas elsewhere in the park.

b.
because there is a great deal of limestone in the water, rock formations grow extremely rapidly.

c.
as hot water rises through limestone, it dissolves large quantities of rock.

d.
mammoth hot springs is a popular attraction because the springs are unique

the president was the speaker and it was a great part of history.

explanation:

video of the national aeronautic space administration's (nasa) coverage of president john f. kennedy’s address at rice university, houston, texas, concerning the nation's efforts in space exploration. in his speech the president discusses the necessity for the united states to become an international leader in space exploration and famously states, "we choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard."

there are many cases in the crucible where propaganda is present, the types of propagandas that are shown are: bandwagon, testimonial, transfer, and card-stacking. the crucible is mainly focus on the ancient beliefs that people from towns had, if someone didn’t follow the rules they would be punished.