Read the sentences given below carefully and identify which sentence contains a grammatical error. If every sentence is grammatically correct, select 'All are correct' as your response.

Which of the following sentences contains an error?

The correct sentence containing a grammatical error is: "Liquid assets consist of currency and receivables that are designed to be convert into funds."

Grammatical Analysis:

In the sentence, the phrase "designed to be convert into funds" uses the passive voice construction. In passive voice structures, the auxiliary phrase "to be" must be followed by the past participle form of the verb, not the base form.

Here, the base form "convert" is grammatically incorrect after "to be". It should be replaced with the past participle "converted".

Corrected Sentence:
Liquid assets consist of currency and receivables that are designed to be converted into funds.