D looks really like it is negating the sufficient!! But I guess the word "CAN" is not as tight as a conditional relationship? Plus the stimulus tells a causal relationship and we are allowed to say without the cause, the result may be different.

If A is sufficient, you don't need B to be necessary.

https://classic.7sage.com/lesson/clarification-for-the-only/

Count me in! Have been preparing for about a year and stuck in 168-170. Discovered some patterns and love to share tips as well as learn from every one of group members

I am interested and have been studying LSAT for about a year. I already discovered some patterns and love to share as well as learn from your guys.

I am interested! Have been studying for a year and already figured out some patterns.