The following sentences that is
interrogative ‘What will you do when the well goes dry?’. Interrogative
sentences are sentences which asks a question and ends with a question mark.
Answer is D Immune protein
Gutenberg’s genius invention was to create a set of letters that could be pressed into “matrix” material, which was then filled with a lead alloy to make type. You got one of each letter in a font of type. If you needed 100 of the letter E, you molded what you needed. If a letter was starting to wear out, you threw it back in the pot and made a new one. Gutenberg's printing press spread literature to the masses for the first time in an efficient, durable way, shoving Europe headlong into the original information age. Being able to print in quantity meant more people could gain access to learning, and more people could create new ideas.