My first lesson …… forgiveness came from my mother. A. upon B. about C. in D. on

The correct answer is: C. in

The preposition “in” is used to indicate a location or position. In this case, the speaker is saying that their first lesson in forgiveness came from their mother. This means that the lesson was taught to them by their mother, and that it took place within the context of their relationship.

The other options are incorrect because they do not make sense in the context of the sentence. The preposition “upon” is used to indicate a cause or reason. The preposition “about” is used to indicate a topic or subject. The preposition “on” is used to indicate a surface or location.

Here are some examples of how the other prepositions could be used in a sentence:

• The teacher gave a lesson upon forgiveness.
• The book is about forgiveness.
• The vase fell on the floor and broke.