This is the 11953rd most frequent Russian word.
затронуло
"затронуло" - "touched" or "affected."
Shows emotional impact, where "затронула" means 'touched', referring to the book affecting emotions.
Эта книга глубоко затронула мои чувства.
This book deeply moved my feelings.
Refers to a topic being discussed, where "затронули" means 'touched upon', indicating thematic engagement.
На конференции затронули вопросы экологии.
At the conference, environmental issues were addressed.
Indicates physical or situational influence, where "затронуло" means 'affected' in the context of impact.