The correct option is A <!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}-->
Jaya was the glue that held our group together.
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Here, Jaya is indirectly compared to glue to mean that she was responsible for keeping the group together just like how glue keeps two separate pieces together. Hence, it is a metaphor. On the other hand, 'like a bolt from the blue' is a simile as it uses the comparison word 'like'.