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\( a^{b}\)
\( a_{b}^{c}\)
\({a_{b}}^{c}\)
\(a_{b}\)
\(\sqrt{a}\)
\(\sqrt[b]{a}\)
\(\frac{a}{b}\)
\(\cfrac{a}{b}\)
\(+\)
\(-\)
\(\times\)
\(\div\)
\(\pm\)
\(\cdot\)
\(\amalg\)
\(\ast\)
\(\barwedge\)
\(\bigcirc\)
\(\bigodot\)
\(\bigoplus\)
\(\bigotimes\)
\(\bigsqcup\)
\(\bigstar\)
\(\bigtriangledown\)
\(\bigtriangleup\)
\(\blacklozenge\)
\(\blacksquare\)
\(\blacktriangle\)
\(\blacktriangledown\)
\(\bullet\)
\(\cap\)
\(\cup\)
\(\circ\)
\(\circledcirc\)
\(\dagger\)
\(\ddagger\)
\(\diamond\)
\(\dotplus\)
\(\lozenge\)
\(\mp\)
\(\ominus\)
\(\oplus\)
\(\oslash\)
\(\otimes\)
\(\setminus\)
\(\sqcap\)
\(\sqcup\)
\(\square\)
\(\star\)
\(\triangle\)
\(\triangledown\)
\(\triangleleft\)
\(\Cap\)
\(\Cup\)
\(\uplus\)
\(\vee\)
\(\veebar\)
\(\wedge\)
\(\wr\)
\(\therefore\)
\(\left ( a \right )\)
\(\left \| a \right \|\)
\(\left [ a \right ]\)
\(\left \{ a \right \}\)
\(\left \lceil a \right \rceil\)
\(\left \lfloor a \right \rfloor\)
\(\left ( a \right )\)
\(\vert a \vert\)
\(\leftarrow\)
\(\leftharpoondown\)
\(\leftharpoonup\)
\(\leftrightarrow\)
\(\leftrightharpoons\)
\(\mapsto\)
\(\rightarrow\)
\(\rightharpoondown\)
\(\rightharpoonup\)
\(\rightleftharpoons\)
\(\to\)
\(\Leftarrow\)
\(\Leftrightarrow\)
\(\Rightarrow\)
\(\overset{a}{\leftarrow}\)
\(\overset{a}{\rightarrow}\)
\(\approx \)
\(\asymp \)
\(\cong \)
\(\dashv \)
\(\doteq \)
\(= \)
\(\equiv \)
\(\frown \)
\(\geq \)
\(\geqslant \)
\(\gg \)
\(\gt \)
\(| \)
\(\leq \)
\(\leqslant \)
\(\ll \)
\(\lt \)
\(\models \)
\(\neq \)
\(\ngeqslant \)
\(\ngtr \)
\(\nleqslant \)
\(\nless \)
\(\not\equiv \)
\(\overset{\underset{\mathrm{def}}{}}{=} \)
\(\parallel \)
\(\perp \)
\(\prec \)
\(\preceq \)
\(\sim \)
\(\simeq \)
\(\smile \)
\(\succ \)
\(\succeq \)
\(\vdash\)
\(\in \)
\(\ni \)
\(\notin \)
\(\nsubseteq \)
\(\nsupseteq \)
\(\sqsubset \)
\(\sqsubseteq \)
\(\sqsupset \)
\(\sqsupseteq \)
\(\subset \)
\(\subseteq \)
\(\subseteqq \)
\(\supset \)
\(\supseteq \)
\(\supseteqq \)
\(\emptyset\)
\(\mathbb{N}\)
\(\mathbb{Z}\)
\(\mathbb{Q}\)
\(\mathbb{R}\)
\(\mathbb{C}\)
\(\alpha\)
\(\beta\)
\(\gamma\)
\(\delta\)
\(\epsilon\)
\(\zeta\)
\(\eta\)
\(\theta\)
\(\iota\)
\(\kappa\)
\(\lambda\)
\(\mu\)
\(\nu\)
\(\xi\)
\(\pi\)
\(\rho\)
\(\sigma\)
\(\tau\)
\(\upsilon\)
\(\phi\)
\(\chi\)
\(\psi\)
\(\omega\)
\(\Gamma\)
\(\Delta\)
\(\Theta\)
\(\Lambda\)
\(\Xi\)
\(\Pi\)
\(\Sigma\)
\(\Upsilon\)
\(\Phi\)
\(\Psi\)
\(\Omega\)
\((a)\)
\([a]\)
\(\lbrace{a}\rbrace\)
\(\frac{a+b}{c+d}\)
\(\vec{a}\)
\(\binom {a} {b}\)
\({a \brack b}\)
\({a \brace b}\)
\(\sin\)
\(\cos\)
\(\tan\)
\(\cot\)
\(\sec\)
\(\csc\)
\(\sinh\)
\(\cosh\)
\(\tanh\)
\(\coth\)
\(\bigcap {a}\)
\(\bigcap_{b}^{} a\)
\(\bigcup {a}\)
\(\bigcup_{b}^{} a\)
\(\coprod {a}\)
\(\coprod_{b}^{} a\)
\(\prod {a}\)
\(\prod_{b}^{} a\)
\(\sum_{a=1}^b\)
\(\sum_{b}^{} a\)
\(\sum {a}\)
\(\underset{a \to b}\lim\)
\(\int {a}\)
\(\int_{b}^{} a\)
\(\iint {a}\)
\(\iint_{b}^{} a\)
\(\int_{a}^{b}{c}\)
\(\iint_{a}^{b}{c}\)
\(\iiint_{a}^{b}{c}\)
\(\oint{a}\)
\(\oint_{b}^{} a\)
B is correct; hydrosphere is the liquid portion of the earth.