Dentity the sentence below as either simple, compound, or complex. i love this study, and i am going to continue in it.

This device blocks an opening along the base/floor of stairs or other walking or working surfaces where materials or body parts might otherwise inadvertently fall through. it should be 4 inches high, with not more than ¼ inch clearance above the floor

Although the account is in good standing at this point in time. is this sentence incomplete or complete?

The pilgrims are at in the beginning of the prologue.