Where is the BEST place to separate the run-on sentence into two sentences?

Make sure you have a pencil before beginning points will be deducted for anyone using a pen.
A) after using
B) after pencil
C) after deducted
D) after beginning

Is the point in the oaqs method where you would you look for more information, a definition, or interpretation.

Lauses unnecessary to the meanings of the words modified demonstrative 2. clauses necessary to the meanings of the words modified relative 3. words for which pronouns stand intensive 4. a pronoun ending in -self and referring to the previously used noun or pronoun nonrestrictive clauses 5. a pronoun ending in -self and used for emphasis restrictive clauses 6. pronouns that ask questions indefinite pronouns 7. pronouns that point out to whom or to what the speaker is referring reflexive 8. everyone, nobody, and something are examples antecedents 9. pronouns introducing adjective or noun clauses interrogative 10. i, you, him, mine, and their are examples personal pronouns

Which development most aided explorers in their ability to set sail the oceans to discover the new world during the age discovery? a.waterproof sails b.the printing press c.map-making devices d.fictional travel accounts