It is high time we (change) our food habit. Here the correct form verb is-

A changed

B have changed

C should have changed

D should change

Correct Answer: Option A

It is high time থাকলে আর এর পর sub আসলে sub - এর পর verb - এর past form ব্যবহৃত হয়। সুতরাং change - এর past form changed বসবে ।