How to answer mulitiple choice questions?

[dumby]

English Idioms and Expressions, Advanced Level

ESL/EFL Test #44 "American Slang Words (18)", question 1

The gang leader told his followers to waste their rivals on the weekend. They are all wanted criminals now.

(a) kill
(b) compete against
(c) drink alcohol with

English Idioms and Expressions, Advanced Level

ESL/EFL Test #44 "American Slang Words (18)", answer 1

The gang leader told his followers to kill their rivals on the weekend. They are all wanted criminals now.

Correct answer: (a) kill
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I dont really understad what do I have to do in this part... I mean... would yo explain how can I do it?

[Torsten]

Hi, please read this explanation and select the correct answer.

Thanks,
Torsten

TOEIC listening, photographs: Szczecin Waterfront