The correct option is C are made
Here, 'are made' in Simple Present Tense is correct because it
is used to indicate a future event on a designated date as part of a plan or
to express habits or general truth. Here, it is a truth that many cameras 'are made' in Japan.
'Made' and 'Here' are grammatically incorrect.
'Are making' in present continuous is
incorrect because it implies an action going on at the time of speaking.