Explanation
The option that is closer in meaning to the word "didactic" is:
D) Preachy
Explanation: "Didactic" refers to something that is intended to teach or educate, often in a moral or instructional manner. It is often associated with being instructive or excessively inclined to teach. Similarly, the word "preachy" means giving moral or instructive advice in a self-righteous or condescending way. Both words convey the idea of teaching or imparting knowledge, making "preachy" the option that shares a similar meaning to "didactic." Options A) Egoistic (self-centered), B) Ascetic (self-disciplined or austere), and C) Energetic (full of energy) have different meanings and are not synonymous with "didactic."