<prompt> Engagement of fetal head is:When the occiput has gone below the pelvic inletWhen the widest diameter of the presenting pa has passed through the pelvic inletWhen the presenting pa can be pushed into the pelvic cavitySynonymous with fixation of head  <response>: Engagement - The mechanism by which the widest diameter of he presenting pa such as the biparietal diameter in an occiput presentation--passes through the pelvic inlet. Deflexed head is the most common cause of non engagement, which indicates towards caeseran section 