Final answer:
In Hemingway's "In Another Country," "take up" means to start or become engaged in a new activity, such as the use of grammar in learning Italian.
Step-by-step explanation:
Based on the excerpt from Ernest Hemingway's "In Another Country," the context meaning of the word "take up" is A. to become interested in or engaged in something. In the passage, the character suggests adopting a new practice, which in this case is the use of grammar in Italian. The phrase "take up" implies starting or embarking on a new endeavor or interest, particularly in a subject or activity that one is not previously engaged with.