The phrase "We have ... of financial problems" refers to a large quantity or number of financial problems.
"Lots" is the correct word as it refers to a large number of something.
Thus, the correct choice is "lots."
Each question has a sentence that has an underlined part. Choose the option which rephrases the underlined part in the most appropriate manner in terms of grammar and usage.
In an attempt to boost their profits, many edible oil-producing companies have been engaging themselves in propaganda against commonly used oils and promoting exotic and expensive varieties of oils \(\underline{as\ more\ healthier\ options.} \)