The diagram shows a section through part of the human eye.
When a person looks at an object which is far away from their eye, which of the following happens?

1 )
suspensory ligaments:slacken / lens:becomes fatter
2 )
suspensory ligaments:slacken / lens:becomes thinner
3 )
suspensory ligaments:tighten / lens:becomes fatter
suspensory ligaments:tighten / lens:becomes thinner
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