(A) Watching the TV or working on the computer leads to overeating.CORRECT because or will need a singular verb leads
(B) Watching the TV or working on the computer lead to overeating.WRONG because or requires singular verb leads
(C) To watch the TV and to work on the computer leads to overeating.WRONG because and requires plural verb lead
(D) Watching the TV and working on the computer leads to overeating.WRONG because same as C
(E) Watching the TV or to work on the computer leads to overeating.
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(B) Watching the TV or working on the computer lead to overeating.WRONG because or requires singular verb leads
(C) To watch the TV and to work on the computer leads to overeating.WRONG because and requires plural verb lead
(D) Watching the TV and working on the computer leads to overeating.WRONG because same as C
(E) Watching the TV or to work on the computer leads to overeating.
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