MGMAT CAT test SC question - Spicy foods

[at1687]

The reason that certain spicy foods, such as the Habanero pepper, makes some people sweat is because they contain a chemical that stimulates the same nerve endings in the mouth as does a rise in temperature; this stimulation sometimes results in the activation of certain biological cooling mechanisms, one of which is perspiration.


a) The reason that certain spicy foods, such as the Habanero pepper, makes some people sweat is because they contain a chemical that stimulates the same nerve endings in the mouth as does a rise in temperature

b) The reason that certain spicy foods, such as the Habanero pepper, makes some people sweat is that these foods contain a chemical that stimulates the same nerves in the mouth like a rise in temperature

c) Certain spicy foods, such as the Habanero pepper, make some people sweat because they contain a chemical that stimulates the same nerves in the mouth like a rise in temperature does

d) The reason that certain spicy foods, such as the Habanero pepper, make some people sweat is that these foods contain a chemical that stimulates the same nerves in the mouth as does a rise in temperature

e) The reason that certain spicy foods, such as the Habanero pepper, make some people sweat is because they contain a chemical that stimulates the same nerves in the mouth as does a rise in temperature

This appeared in my first CAT test of Manhattan GMAT in the 6-pack. D is the correct answer according to MGMAT.

While I can see that D corrects for all the errors that other choices don't, D still seems incorrect because the word 'that' is used twice:
The reason that certain spicy foods ... makes some people sweat is that these foods contain ...

Isn't this redundant and incorrect? Shouldn't it just be
The reason certain spicy foods makes some people sweat is that these foods contain?

Thank you in advance for your help.

[ghong14]

The first "that" is used as a modifier for reason. The second that is used in place of because.

[RonPurewal]

hi,
wrong folder for this question; please post it in the correct folder (the MGMAT CAT folder).

thanks.