An indefinite article is used when we are talking generally about something whereas a definite article is used when we are talking about something specific.
The indefinite articles are 'a' and 'an'. An is used before a word starting with a vowel or vowel sound. A is used before a word starting with a consonant or consonant sound.
A definite article is an article that tells the uniqueness of something.
'The' is the only definite article .
The blank will take 'a' because it comes before the noun complement 'Japanese camera'.
A JVC is a Japanese camera.
The correct answer is option A) A.