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The correct answer for the question is option 1, which includes rivers Krishna, Narmada, and Sabarmati. Let`s analyze the options to understand why.
Option 1 (1, 2, and 4): This option includes rivers Krishna (1), Narmada (2), and Sabarmati (4). This option is correct because all three rivers flow in a westward direction.
Option 2 (2, 1, and 3): This option includes rivers Narmada (2), Krishna (1), and Mahanadi (3). However, Mahanadi is an east-flowing river, so option 2 is incorrect.
Option 3 (1 and 4): This option only includes rivers Krishna (1) and Sabarmati (4). Narmada is missing from this option, so it is incorrect.
Option 4 (2 and 3): This option includes rivers Narmada (2) and Mahanadi (3). Krishna and Sabarmati, which are west-flowing rivers, are not included in this option. Therefore, option 4 is incorrect.
Therefore, option 1 is the correct answer as it includes all the west-flowing rivers mentioned in the question.