سوال ۳ کنکور ارشد ریاضی ۱۴۰۲

The sentence describes a negative consequence ("can lead to ...") of not sharing a language with customers. The fixed collocation for communication that fails is communication breakdown — a complete failure of the exchange of information.

• 1) breakdown — a failure or collapse (of a machine, a relationship, or communication). Communication breakdown is a standard collocation and exactly names what happens when the two sides have no shared language. ✔
• 2) brevity — shortness/conciseness of speech. Not sharing a language does not make messages brief; and brevity is not inherently a bad outcome.
• 3) gesture — a movement of the hand/body; "communication gesture" is not idiomatic, and gestures are in fact the remedy people fall back on, not the problem.
• 4) imitation — copying someone; unrelated to a language barrier.

Exam trick: in vocabulary items, first fix the polarity the sentence needs — "lead to" here demands a negative outcome — then pick the option that forms a standard collocation with the given noun (communication breakdown).