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Which instrument listed below is BEST used by scientists in viewing samples or objects that are invisible or slightly visible to the naked eyes?
A. Lᴇɴs
B. Gʟᴀss
C. Mᴀɢɴɪғʏɪɴɢ Gʟᴀss
D. Mɪᴄʀᴏsᴄᴏᴘᴇ​