_a handheld mobile computing device that has computing functions as
well as telephone and Internet access
(PDA)

answer; i believe the correct answer is (a) all trenches must have access/egress;

1. a

2. a

3. d

explanation:

do not use any of these common illegal characters/symbols:

# pound

% percent

& ampersand

{ left curly bracket

} right curly bracket

\ back slash

< left angle bracket

> right angle bracket

* asterisk

? question mark

/ forward slash

  blank spaces

$ dollar sign

! exclamation point

' single quotes

" double quotes

: colon

@ at sign