This question is formulated in a wrong way. It should be as follows:
Read the sentence below:
The gymnasium is equiped with the proper weightlifting apparatus for competitions.
Which word in the sentence is spelled incorrectly?
A Gymnasium
B Equiped
C Apparatus
D Competitions
And the correct answer would be "equiped" is spelled incorrectly because the verb "to equip", when conjugated in the Simple Past Tense, is spelled with double "p" (equipped).