At present there is Only 115 elements are known ... those 115 elements are not in sequence ... from Hydrogen to Ununbium there are 112 elements are present and these all are known elements .. elements 114 , 116 and 118 have also been discovered more recently ... and the grand total of known element is 115 ...

The correct answer is option B, which is 118.

Explanation:
The periodic table is a chart that organizes all the known elements based on their chemical properties. As of 2021, there are 118 known elements. These elements are represented by symbols, usually consisting of one or two letters, and are arranged in order of increasing atomic number.

Here are some key facts about the number of known elements:

- The first element discovered was hydrogen, in 1766.
- The most recently discovered elements were added to the periodic table in 2015, when elements 113, 115, 117, and 118 were officially recognized by the International Union of Pure and Applied Chemistry (IUPAC).
- The discovery of new elements is rare and requires significant scientific effort. Most of the elements beyond uranium (element 92) are created artificially in laboratories.
- There are several ways to classify the elements, including by their physical state (solid, liquid, or gas), their chemical properties (such as reactivity or electronegativity), and their position in the periodic table.
- The periodic table is an essential tool for chemists and other scientists, as it allows them to predict the behavior of different elements and compounds.

In conclusion, the correct answer to the question is that there are currently 118 known elements.