Question

which of the following is easier if an audience is knowledgeable about the subject matter?
cultivate a common interest in generosity
exploit differences in attitudes, values, and beliefs
effectively employ jargon
persuade his/her audience to change what they are doing

Explanation:

Jargon is specialized terminology for a specific field. A knowledgeable audience already understands this terminology, so using it effectively becomes easier without needing extra explanation. The other options do not align: cultivating generosity interest is unrelated to subject knowledge; exploiting attitude/value differences is not made easier by audience expertise; persuading behavior change can be harder with informed audiences who may have established views.

Answer:

Effectively employ jargon