Choose the most suitable conjunction for the given sentence:

She bought herself a map _______ she wouldn't get lost.

The correct answer is "so that."

Key Points

• Conjunctions are words that link other words, phrases, or clauses together.
  • Example: I like both dancing and singing.
• Let us first understand the usage of the given conjunctions:
  • "So" is used to introduce clauses of result or decision.
    • Example: It was a long journey, so I'm really tired now.
  • "Since" is used to give a reason for something.
    • Example: Sita had no reason to take a taxi since her flat was near enough to walk to.
  • "So that" is used to introduce clauses of reason and explanation.
    • Example: They both went on a diet so that they could play more football with their friends.
  • "Therefore" is used to say "for that reason."
    • Example: Payment was received two weeks after it was due; therefore, you will be charged a late fee.
• In the given sentence, the blank will be use to introduce a clause of explanation.
• Thus, from the above information, it can be concluded that the correct conjunction to use in the blank is "so that."
• The correct sentence: She bought herself a map so that she wouldn't get lost.

Hence, the correct answer is option 3.