It has been proved______eating vegetables in childhood helps to protect you against serious illnesses in later life.

A. if                                      B. because                         C. when                              D. that

It has been proved ___ eating vegetables in childhood helps to protect you against serious illnesses in later life.

 A. if            B. because             C. when           D. that

It has been proved ___ eating vegetables in childhood helps to protect you against serious illnesses in later life.

 A. if            B. because             C. when           D. that

It has been proved______eating vegetables in childhood helps to protect you against serious illnesses in later life.

A. if                            B. because                   C. when                             D. that

It has been proved ______ eating vegetables in childhood helps to protect you against serious illnesses in later life.

A. if                            B. because                   C. when                             D. that