Select the most appropriate option to fill in the blank.

Multi-client messaging systems make it easier to keep in______

The correct answer is 'Option 2' i.e. "touch."

Key Points

• The phrase "keep in touch" is commonly used to describe maintaining communication with someone.
• A multi-client messaging system facilitates communication among various users, making it easier for them to stay connected, hence "keep in touch."

Therefore, the correct sentence is: 'Multi-client messaging systems make it easier to keep in touch'.

Additional Information

• Here's the explanation for each option:
  • "Diary" - The phrase "keep in diary" is not commonly used in English. While one might write in a diary, the phrase does not fit in the context of a multi-client messaging system, which is about communication with others, not personal record-keeping.
  • "Roll" - The phrase "keep in roll" is not a standard phrase in English and does not make sense in this context.
  • "Secret" - While multi-client messaging systems can have private or encrypted conversations, the phrase "keep in secret" is not standard English. The typical phrase is "keep a secret," which means to not disclose information. However, this is not the main function of a multi-client messaging system. Its primary function is to facilitate communication, making "touch" the most appropriate choice.