How many single bonds are present in methane? A. six B. five C. seven D. four

six
five
seven
four

The correct answer is $\boxed{\text{D}}$. Methane is a molecule with the chemical formula $\ce{CH4}$. It is a tetrahedral molecule with a carbon atom at the center and four hydrogen atoms bonded to it. Each carbon-hydrogen bond is a single bond.

Option A is incorrect because there are only four carbon atoms in methane, not six.

Option B is incorrect because there are only four hydrogen atoms in methane, not five.

Option C is incorrect because there are only four carbon-hydrogen bonds in methane, not seven.