1.2 level 2 skill check: commas
add and/or remove commas  where necessary in this extract.
however
it
is
not
only
the
hotel’s
location
that
makes
staying
here
a
pleasant
experience.
free
wifi
makes
getting
online
a
piece
of
cake,
whilst
every
room
is
en-suite
and
comes
complete
with
a
lockable
safe,
for
your
valuables,
and
possessions.
although,
we
are
located
within
easy
reach
of
the
city’s
major
tourist
attractions,
the
area
surrounding
us
is
actually
one
of
the
quietest
sections.
 

© bksb 2019

However, it is not only the hotel's location that makes staying here a pleasant experience. Free Wifi makes getting online a piece of cake, whilst every room is en-suite and comes complete with a lockable safe for your valuables and possessions. Although we are located within easy reach of the city's major tourist attractions, the area surrounding us is actually one of the quietest sections.

Explanation:

However(,) it is not only the hotel's location that makes staying here a pleasant experience. Free Wifi makes getting online a piece of cake, whilst every room is en-suite and comes complete with a lockable safe() for your valuables() and possessions. Although() we are located within easy reach of the city's major tourist attractions, the area surrounding us is actually one of the quietest sections.

There are three changes in the sentence. First is the addition of comma after however, then the commas after safe, valuables and although are removed.

the answer is: b: however, that doesn’t mean that the current drought isn’t real.

type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.