Find the error with subject-verb agreement. Select the incorrect verb and type it correctly.
A caravan of camels take tourists into the desert near the city of Jaisalmer
in India. Many tourists find that camel treks provide them with a special
opportunity to observe rural life.
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A caravan of camels takes tourists into the desert near the city of Jaisalmer  in India.

Explanation:

The subject and the verb must always agree in number. If a noun is singular, the verb must be singular as well. In this case, the noun phrase 'a caravan of camels' is the subject, which performs the action of the main verb. Since word 'caravan' is the head of this phrase, and it is singular, the verb form must be singular. It is, therefore, correct to say that "a caravan of camels takes tourists into the desert."

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