Which sentences correctly use conjunctions or conjunctive adverbs? Check all that apply. Although horseback riding is fun, it can be expensive. Horseback riding is fun, then it can be expensive. Although horseback riding is fun; it can be expensive. Horseback riding is fun; however, it can be expensive. Horseback riding is fun, but it can be expensive.

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."

i cannot see any of the options                                                          

you need to make an explanation. so, since you did not include one, so no one, and i mean no one can unfortunately you,