In the question below is given a statement followed by two options numbered 1 and 2. Based on this choose the correct option. Statement: Every microorganism has a minimal, a maximal and an optimum pH for growth. Option 1: Bacteria can grow over a wider range of pH values than most yeasts and molds. Option 2: Yeasts grow well in an alkaline medium. Options:

Correct option is D

It is true that each microorganism has a minimum, maximum, and optimum pH for growth, but let’s analyze the two options:
Option 1 is incorrect: In general, yeasts and molds are more acid-tolerant and can grow over a broader acidic pH range compared to most bacteria. Many bacteria prefer neutral to slightly alkaline pH (around 6.5–7.5), while fungi can often grow well below pH 5. Hence, the idea that bacteria have a wider pH range than yeasts and molds is not supported.
Option 2 is also incorrect: Yeasts typically prefer and grow well in slightly acidic environments, commonly around pH 4.0 to 6.5. They are not adapted to alkaline conditions (pH > 7). Alkaline conditions may inhibit their growth or cause stress.
Thus, both Option 1 and Option 2 are incorrect, and the correct answer is Option (d).