a) filter and fold
b) inject and fold
c) finger and fold
d) fold
Answer: b
Explanation: The reduceRight() method reduces the array to a single value. The reduceRight() method executes a provided function for each value of the array (from right-to-left). The return value of the function is stored in an accumulator (result/total). Hence it does the operation of injecting and folding.
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