IMO B

The major difference between instead of and rather than is that... ' instead of' shows replacement

Egs. I was about to give presentation, but I fell ill, so Tom gave the presentation instead of me.

or i will have lemonad instead of shake.

' Rather than' is used to show preference.

Egs. i would prefer to marry in Jan rather than Dec.

I would call him a smart worker rather than a hard worker.

So, in this question too preference is shown ' may people believe that potato is unhealthy rather than ....

A: being
B: Correct if you complete the sentence.. potato is both low in calories..
C: not a correct sentence, if you complete it.. potato has both low in calories


Please feel free to correct me.

confuse mind wrote:Many people mistakenly believe that the potato is a food that is unhealthy and fattening rather than being both low in calories and high in necessary carbohydrates.


b) rather than one that is

d) instead of being one that is

IMO - D OA - B

two problems in D:
1) BEING and IS signifies the same thing in D, making one of them redundant

2) INSTEAD OF a PREPOSITION and therefore should be followed by A NOUN (NOT A VERB OR CONJUGATED VERB such as BEING). For example,

INSTEAD OF SUGGESTING ..= wrong
INSTEAD OF THE SUGGESTION...= correct